I peruse ModWiggler occasionally (bbs forum for synthesizer enthusiasts), more often since the Reddit blackout stuff when I stopped using it.
And I am actually quite pleasantly surprised by the quality of discussion and how many people are actually open to more radical ideologies. Way more personal and pleasant than subreddits for the topic. In fact, most synth enthusiasts I know are leftists. I don't really know why.
I think there is an argument to be made that communities that are smaller and harder to enter have better social health.
Also, I think forum users tend to be older, so you get less edgy teens. I don't trust surveys. I think most people I interact with on Reddit are teens. Surely they wouldn't lie about their age, right?
Camus!