I frequent the site and actually do use the forums, though I only really stick around because I'm part of a forum roleplay. I completely agree, though, the forums are dreadful and the people who post there are generally vapid, self-absorbed morons.
I think the recent SJW shit 4chan refers to is a backlash of sorts against the site's earlier days as a breeding ground for ~*edgy and controversial*~ libertarian types. There were people (usually also enormous weeaboos) who unironically argued for eugenics and racial separatism, along with a shitload of pedophile and rape apologists.
Nowadays it swings too far in the other direction, and you can't coherently discuss things like men's issues without the mods busting in and labeling you a misogynist pig. Everyone is still a weeaboo, though, and I don't think that part will ever change. It's like Andrew Dobson's recent SJW kick, superficial and insincere.