Actually, there is. Some of the threads in this forum are hundreds of posts long and very difficult to wade through if the signal to noise ratio is low.

Now if there is a thread that starts off with a topic that I'm not interested in, I can ignore it. If a thread degenerates into a topic that I'm not interested in, I can ignore it. If a thread becomes a jumble of topics, I deal with it as best I can. If something is very interesting, I try filtering out what I'm not interested in. If the interesting thing isn't that interesting, I just ignore the thread. There isn't a huge problem in those cases, in my humble opinion.

But when I'm trying to read or discuss something and it becomes so polluted that it's unenjoyable to continue, then I try to read or discuss something else and it becomes so polluted that it's unenjoyable to continue, then I try ... (you should get the point) ... and it's the same pollution by largely the same group of people I am going to get upset.