Poe being the only prisoner taken was in of itself a sin. If you listen to the sin, he's not asking why Poe was only prisoner taken but also why not Poe and Max Von Sydow, who also has knowledge of the map. Why not take both? Not why was no other irrelevant inhabitant taken, but why not both relevant characters?
And the hand closing thing is a sin because they sin movie cliches and tropes...and someone closing another person's hand is a film trope and they just put a snarky comment over it.
I don't expect any explanation or whatever to make the videos enjoyable for you but it's supposed to be from the viewpoint of a clueless filmgoer who thinks he's a critic. Hence the many 'stupid' sins and nitpicky junk. It's not meant to be a literal, serious critique (though here are aspects of that that get sprinkled). And they expanded the length of the vids because fans asked them (though i do agree some of their lengths are a bit ridiclous but not because of the time it takes to watch them but becuase its spreading the material a bit thin).