I think I know the answer. When I came there after Putin banned pedochan for Russia this board started to become popular. So the answer is obvious. The reason is me, and all other posters just follow me like the hyenas.
He has to be sarcastic. If he is, could be right in the sense that it would be really hard to find good posters anywhere. I don't know about obscure dead imageboards which could maybe have decent quality though.