I do think anarchy is dumb, but the rest was just jokes, man.
If the choice I have to make is between my current life and the one facing those two kids, I think I'll take my current one. Am I evil because of that? Am I empowering a corrupt system? Maybe. But the situation in the film is deliberately absurd, as well. A satirical allegory is fine for talking grand ideas, but it isn't very good for human interactions. I generally care more about the latter, and thus the film is lesser for its focus on the former. Maybe if Capt. Am. had made the decision to blow up the door, or even know that that was an option, maybe I'd be more interested. But those characters that escape? Who are they? Why should I care about them other than in the abstract? I don't, it's a problem.