Just for myself: most of the smarta$$ remarks waste my time. I'm looking for interesting information, and they don't provide any.
I understand the situation. People need to chill out. If you've got some beef with another user, just contact them personally.
I, like you, just want to read interesting things. Maybe there should be a sticky thing like in other forums for personal conduct expectations.
I have downvoted quite a lot of "smart$$" comments but never something that added original thought. I come to HN for comments that educate, inform and make me think. If i wanted a good laugh I would go to bash.org