The more popular blue boards were pretty bad too, let's be honest. It wasn't hard at all to find things on those boards that wouldn't be tolerated on any mainstream social media, for good reason.
Where I'm sat the only reason our three (?) social media companies restrict none illegal speech/content is to make it more appealing to advertisers.
I miss the internet before it was driven by advertisers and their investors.
Sure I've encountered awful people on imageboards, but I've also encountered very nice, helpful people, some of which I've stayed in contact with long term.