Yep, 4chan is the Nazi bar of the Internet, and cherry picking an example of innocent shitposting means nothing.

It had its moments, twenty years ago, but all the worthwhile anons left ages ago.

There's even a fairly famous quote from a 4channer about it.

"Any community that gets its laughs by pretending to be idiots will eventually be flooded by actual idiots who mistakenly believe they're in good company." -Descartes né Anon

Of course, Anon still missed the real lesson.

There are always far, far, fewer people "just joking around" than the good people in the room want to assume.

And pedos, don't forget about the pedos.

Oof I used to be a regular on r9k and now I cringe so hard about it. Thank God it was anonymous.

I was going through a tough time and the people there accepted me and engaged with my posts. In hindsight I think people just connected with my anger, but the venting was helpful.

At some point a friend saw my laptop and said "holy shit you're asking 4chan for advice, hahaha what the fuck is wrong with you" and she laughed until she was wheezing, and I never went back on again.

The /tg/ board was the source of some of the greatest tabletop RPG content I ever saw in the 2010s, really great discussions and whole homebrew systems born out of threads that just pitch cool ideas. Of course it came with the same veneer of snark and shock comments as the rest of 4chan but that was on every site in the 2010s. I haven't been back there in a long while so I can't speak to it these days.

/b/ is mostly porn and incest fantasies, which isn't very good, but nothing compared to /pol/.