Hyperbole, I believe is the word. Exaggeration to prove a point. Not every thread turns ugly, but there have been more than enough (Skuzzy's pretty good about deleting/editing most of the worst stuff), and if I had a dollar for every physical threat, insult, slur, or deragatory remark involving someone's mother, I'd be rich.
Not everyone is an idiot, but there's already a surplus in AH, and I see more guys talking stupid **** every night. It's not necessarily a negative reflection of the entire community, but there are more than just a few people who do seriously need to take a break.