I'm sorry, what makes you think so?
Go to my profile. See the downvotes by @stellabelle, @bacchist and @lauralemons, and notice that even on the face of ad hominem attacks, logical fallacies and general unpleasantness, I neither downvoted them, nor personally attacked anyone.
Laura called me a "fucking creep", @bacchist insults me by saying "I'm a dunce".
Seems to me that the problem is someone disagrees with the party line..
Don't worry, with more people joining, it will hopefully balance out the shitty content/commenters to the better one in time.