They got upset because moot banned any discussion of GamerGate, including journalist conflicts of interest and censorship on other forums around the web. 4chan

They got upset because moot banned any discussion of GamerGate, including journalist conflicts of interest and censorship on other forums around the web. 4chan until then had had very few restrictions on speech. It was very unusual for posts to be removed for mentioning, say, that Kotaku's Nathan Grayson had given favorable coverage to close friends.