Did you miss the whole part where 4chan got sold out and turned over to soy chugging faggots who procceded to ban hate speech and stiffle any discussion? Not only so they can run adds but so they can virtue signal. There is a reason one of the global rules is "no rascism". So as an effect any person with half a brain cell got beaned or left and Trump fags flooded in finding it their hole and the whole thing went to shit.
It's the image board equivalant to facebook now they even log IPs of posters and lurkers. It's exactly what happened to that giant Finnish image board.
The only thing good is /fit/ and even that has seen decay, filled with degenerates and constant wojack spam.