The somewhat prickish question that comes to my mind is, "Who's fault is that?"
Even back before I officially joined OCR, browsing the forums told me that each one was different. Gen Dis was about games, movies, music, etc. and was more moderated, UnMod was semi-controlled (fun) chaotic nonsense, the WIP forum was generally helpful advice on making remixes... and this was seen by me back in 2002 when I was a complete forum newbie.
That's why you have to check things out. See what goes where, how things are run... basically "lurk moer!". It's the best way to find out if it's someplace you want to visit, and works far better than just going with a knee-jerk reaction and turning away before you even give the community a shot. After all, if you walked out after the first bits of "The 5th Element" because of how it initially makes the movie seem, you'd miss out on how entertaining it gets later. Right? So, why treat forums any differently? Give them a shot and stick around. Like the movie, they may get better as you see more.
Of course, that analogy only works if you liked that movie, but you get my point