The Cabin in the Woods (2012)

Continuity mistake: When Curt is reversing the van from the crumbling tunnel, he's shown sticking his head out the window, then looking forward and again with his head out the window in the same shot.

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The Director: This is all most unpleasant. I know you can hear me. I hope you'll listen. You won't get out of this complex alive. What I want you to try to understand is that you mustn't. Your deaths will avert countless others. You've seen horrible things: an army of nightmare creatures. And they are real. But they are nothing compared to what lies beneath us. There is a greater good, and for that you must be sacrificed. Forgive us... And let us end it quickly.

Trivia: The movie pays tribute to many famous horror movie monsters. The creature with the Buzz-Saws in its head with the Puzzle Orb is based off PinHead. Once it's free, you can see a Chatterbox-influenced cenobyte standing next to it. The people with ceramic masks who tie up and torture the scientists are based off The Strangers. The psychotic clown with the knife can either be seen as a tribute to PennyWise or Killer Clowns from Other Space. The massive killer bat is obviously from the movie BATS. A chainsaw can be heard as the different monitors are showing the slaughter - indicating LeatherFace. The ghoul-doctors operating on a victim while staring into the camera is based off House on Haunted Hill. The Red-Neck zombies brought to life through an incantation from a book is a tribute from The Evil Dead. The Scare-Crow-like zombies who kill the black security guard are based off of the movie ScareCrow.

Question: Is there a reason, that a facility full of monsters would ever, under any circumstances have a System Purge button? Is it just to make satire of the fact that the antagonist is usually stupid?