This isn't really my opinion, but a collected opinion from a couple of general regulars. So don't come complaining to me about this, even though where is / how to regulars aren't really known for that so I shouldn't have anything to worry about.
The general assumption is that general is ruined by new users who post just for the plus 1 post count and also that its the new users who make terrible topics, making general an overall very uninteresting place to post. I couldn't agree more.
Now there is another side of this that general regulars and I had in common that we also agreed on. Some of the blame can go on people who use to post in general, but quit because of the poor quality and uninteresting topics.
You say how is it our fault? It's because the only people that really make interesting topics and stuff too talk about is you guys. If you give up and leave general then there isn't really a way of cleaning it up is there? What's it help by just saying Oh, general is shit. I don't post there anymore? It doesn't help at all. Why say stuff, but do nothing about it?
Honestly thing about. The where is / how to regulars are the best posters on newgrounds. If you guys go back to general and start making topics again, and contributing it can only make the place a little better. It's not like it's going to make it worse.
Do whatever you want with this. Debate, argue, agree, but maybe the best thing to do is to actually do something about it.
My Opinion
I believe it's mostly the new users and a little bit of the older, more experienced people leaving.