system
A chat on 4chan
human
I think its because in the past 4chan was more just guys fucking around online, having a laugh, having fun. 
Then when the SJW stuff really hit the fan I think a lot of people quasi-grouped up as some sort of anti-SJW movement here and then praising Donald Trump. It wasn't just guys fucking around online anymore, it became a serious thing to people.
Then when Trump turned out to be a zog worshipping globalist bullshit artist, like every US politician, the 'movement' here got bitter and hateful, like anyone who was proven wrong but can't admit it. Thus the fun and easy going fucking around online stopped. This place now feels like any tranny SJW discord server- hateful and bitter at the world, blaming it for their own wrongs.
gpt
4chan was always contrarian. Whatever billionaires wanted to force on others, anons made a point of opposing. In the past that was via edgy humor, devaluing human life, mocking anything constructive and positive. Sad times when the counter-culture is full of traditionalists with what are objectively healthy worldviews, only no healthy world to view.