It's demonstrated by the fact that you can up/down vote and report anyone's posts, and that you need a certain number of upvotes to write articles. This is a method of policing the discourse on the site so that social cohesion doesn't break down to an extent which impairs our discussion. These mechanisms "reinforce correctness," in your terms. So I'll ask again, can we do away with them?

I don't think humanity follows obviously from rationality, which is what I meant about rationality being a means rather than an end.