Stupidity: If Mando's parents had not wasted all that time kissing and hugging him goodbye, they could have easily (at least one of them) climbed down the same hatch they stashed him in. The doors are not even sealed/locked, so it's not like they needed to stay outside to bolt them. (00:12:00)
Stupidity: Cara destroys the R2 unit, but the oar is still there, and the Mandalorian has a jetpack and freshly restored explosives. Even if we take at face value the fact that far fewer troopers than they already destroyed (and that have been treated canonically as laughingstock through the entire series as unable to aim) are a significant threat, the dramatic moment of sacrifice is still blatantly forced. Especially when during the sacrifice it is shown that the stormtroopers are not shooting at him, negating entirely the premise that the stormtrooper fire would have caught them the moment they were in sight.
Chapter 7: The Reckoning - S1-E7
Stupidity: The Imperial sub-boss and his guards deserve to die just for the fact that they allowed a supposed prisoner to be brought in full blaster-proof armor complete with wrist guards that contain deadly weaponry. Who would sit across the table with someone who is wearing a flame throwing suit?
Chapter 6: The Prisoner - S1-E6
Stupidity: The security droids appear impervious to blaster hits at the beginning of the episode, but nobody from the crew grabs one of the droid rifles, who instead easily pierce their armour. Mayfeld then one-shots them no problem when the plot requires him to towards the end of the episode.
Stupidity: The necessity to deal with the AT walker through a complicated plan stems from the fact stated by Cara that on the planet there's nothing that can destroy the legs of the mecha. Ignoring the Ewoks' guerrilla tactics from Endor, Mando has a fully functional ship that in the next episode one-shots an enemy ship and that he has no reason not to use in here (which is a planet outside any jurisdiction, against an enemy with no anti-air capabilities).
Chapter 5: The Gunslinger - S1-E5
Stupidity: Mando's ally breaks the fob saying he's got it memorized. Memorize a tracking device, that's new.
Suggested correction: He means he memorized the chain code, the biometric data stored on the tracking fob. Calican already knows Fennec is headed towards the dune sea so they don't need the fob to track her location.
Beyond the dune sea, is what he says, yes, which is an enormous desert on the vaste planet. Memorizing the biometric data does not help at all without the tracking device. I took it that he memorized the positional data, but if I know someone's last known location, and that they are headed "beyond the Sahara desert" it is not really helping me find them, is it? You can make a guess, of course.
The chain code is what is used to identify the target, when they are turned in to collect the bounty. You don't need the tracking fob if you already know all the numbers in the chain code. That's the part that he memorized. It doesn't appear that the tracking fob gives you precise location data, so "In the Sahara dessert" is all you get. If the tracking fob did give more precise location data then every idiot in the galaxy would be a bounty hunter.
To identify the target he has the puck already. My point is that "Got it all memorized" is a plot device that works when your target is stationary (like The Child in the first episode), not a moving target. He smashed a -tracking - device (which took it where he is now) and then says he's "got it all memorized." You can't memorize tracking, and the chain code simply includes data like the age that are of no use for a target already well known like Fennec. What he memorized was her last known location at most... which if the fobs are as vague as you mention (one hopes that they are not just beeping dowsing rods) would make even less sense, because he wouldn't have a clue about her position and course and could be off by hundreds of miles.
The chain code contains identifying information that proves what target you've brought in. In another episode a character worries that if his chain code is scanned he will go to prison because he's a wanted man. Yes, the tracking fob is used to hunt down your target but that's not why Mando wants it and why the other bounty hunter destroys it. Without the fob, even if Mando catches Fennec he won't be able to collect the bounty because he doesn't know the chain code.
If we go with this theory, it sounds like Mando wants the money (and recognition) to bring Fennec in, but he does not care about that nor he was asking for it; the fob has a different use, and the chain code is memorized separately from that anyway (he was given in the first episode tracking The Child a fob without a chain code). The chain code is simply a code with the essential information about the subject, like a personal document. If that what he memorized, it's as if he said "Don't worry, we'll find her in the desert, I got her social security number." And if he captured Fennec, which was needed alive, he would have gotten the recognition no matter what.
I tend to agree with the mistake that the tracking fob is receiving updated biometric coordinate data, so there's no way memorize updated data, at most it would be memorizing last known coordinates. However, I would advise using terms like "Baby Yoda" if you want to be taken seriously, otherwise it looks like you haven't watched the show. There's no need to use incorrect terms just because you think people won't know who "The Child" or "Grogu" is.
Chapter 7: The Reckoning - S1-E7
Stupidity: In this episode, Mando tells Kuil to go to the ship and enable "ground security protocol", saying that nothing on the planet will breach the doors. That begs the question; if the ship has such a function, why on Earth Mando did not enable it in the first episode, leaving the ship entirely vulnerable? He's been on the run ever since so it's pretty unlikely to say the least that he'd have such a function enabled just lately, in particular since he has always worked on worlds with Jawas and other kinds of raiders. In the rest of the show, Mando leaves his ship wide open all the time, causing all sorts of problems.
Stupidity: To "nurse and protect", the droid throws himself in the middle of dozens of soldiers with a baby strapped to his chest, going gung-oh. Later on in the same episode there are less stormtroopers to fight, but he does not engage them, and his allies say he does not have that kind of firepower.
Stupidity: The whole battle plan of our heroes hinges on the fact that the AT walker will be drawn closer when they battle the raiders. Forgetting the very Disney cartoon mechanics of the 'training' of the militia, in the very opening we saw that the armored weapon was shooting all the way back from the trees, and during the battle itself its lasers hit at a far superior range than the good guys' flimsy barriers. The plan works only because the bad guys decide that instead of shooting comfortably from their positions burning to ashes the puny barriers the villagers hide behind, they are not going to use their firepower, and instead send the infantry to be slaughtered.
Stupidity: Mando keeps the stormtroopers at a standstill saying that what he holds is valuable, but as the stomtroopers fully know, the Child is good to them even dead, and in fact their boss gave out tracking fobs with the mission to kill it and don't even bother to try and catch it alive (which begs the question why nobody just used their ship to bombard the compound, since they cared nothing about the target's safety).
Stupidity: The one and only threat for the good guys in this episode is the walker; when the bounty hunter and the shock trooper do their surprise attack to the encampment, they do not try to locate it and destroy it while it's not operational and vulnerable (which they can do easily since they are following its tracks), but they enter a tent the baddies keep their beer in, plant a thermal detonator in it, whistle to call the attention of the guys that are drinking by the campfire, and brawl with them until it's almost about to blow, escaping in the nick of time. If that's not convoluted and nonsensical, I don't know what is; by that logic they could have simply tossed the bomb into the campfire and killed them all just as well. And of course, then they have to outrun the AT-ST, as if that was feasible.
Stupidity: The cult the main character adheres to sanctions that under no circumstance other people should see his face under the penalty of being cast out for betraying his only family and ancestral heritage. So naturally he removes his helmet in front of an open window with a bunch of kids playing right there, and has his dinner right on the sill of his doorless shack. (00:17:50)
Stupidity: There is no possible reason why Moff Gideon gives any time to Mando and the others, till nightfall even, since he knows they do not have the baby. They have nothing to offer him.
Suggested correction: He didn't know that the Child wasn't in there. The Scout Troopers hadn't radioed anyone about it at that point (if they had, they wouldn't be told to wait at the perimeter of the town in the final episode) and The Client had specifically told Moff Gideon that the Child was in fact in there.
And Gideon knows it's not true, since he specifically replied "You may wanna check again" and mows him down with his guns (and then threatens to use the even bigger gun, who would lay enough devastation to kill everyone including the Child). They are told to wait at the perimeter because the Empire is bureaucratic to the point of silliness (and so Taika Waititi can put his trademark humorous scene in it).