Stupidity: Towards the end of the season, the Borg Queen uses Soong to get control of the ship. When asked by the heroes who gained back control, she says that her plan is to get back to the Delta Quadrant and prepare for the Confederation that she already fought in her 'future'. If that's her plan, it's quite silly; she prepares for a conflict she might lose, when she has in her grasp the man who, as she knows, will originate the Confederation itself; Soong, not to mention that she can assimilate (or destroy) the whole Earth already. No reason is given why she'd let 'us' live and thrive.
Two of One - S2-E6
Stupidity: Adam Soong's daughter is a grown woman who is well aware of her unique critical condition and the outside world, and is homebound because of her health condition that prevents her from being exposed to direct sunlight and pathogens. Apparently, with all the free time she has and awareness and investment in her father's researches who are all about her, she never ever looked at her father's computer (which has all the info about her story right there on the desktop) nor googled him before.
Suggested correction: I'm sorry, but what reason would she have to look at her father's computer or google him prior to becoming suspicious of him? Yes, the information about the experiments is laughably easy to find but that doesn't mean it's stupid that she hasn't stumbled upon it yet. She never looked because she trusted her father. She doesn't have a reason not to, she isn't privy to his shady actions like the audience. It doesn't seem unreasonable that someone who is so isolated from society might be naïve.
If she were a pure innocent soul isolated from society in an absolute sense, yes, but if you look at episode 4, she is aware that he is being audited, and she even jokes about the line he actually used "Humanity is at a crossroad" implying it's a bad line that he used before and that, besides being a huge red flag about the unethical experiments she is totally unaware of a couple episodes later, there is contention about what he is doing. If your dad were implied in some public auditing the outcome of which your very life depends on, I think you'd peek at the media coverage. Even worse for the computer, with the data easily accessible from the desktop, in video format - she's home all day and yet she never ever in a lifetime peeked what her dad was up to, which is, and she is aware of that much, finalized to save her life.
Stupidity: From a remote location, Kore deletes her father's research data from his computer, defeating him. So Adam Soong in a few decades of work as a geneticist, apparently never once backed his work up or kept a hard copy of it. (00:20:05)
Suggested correction: The question is left unanswered. We simply do not know if he did. Or when was the last time he did a backup. If she did a system-wide purge. Or if she got to that too.
There's no question waiting for answers about it, is there? Quite the opposite, the scene is very straightforward and would be entirely pointless if he had a backup to salvage (which would be a terrible backup if it could be wiped out remotely), and his reaction does not imply anything of the sort - she knows that she is completely destroying his work with a handwave (work she didn't even know about until hours earlier) and she is right, because he's a defeated man that turns to a very different project entirely because of her action. It's simply an oversimplification/trivialization of how research (and computers in general) work in movies.