I'd just like a venue where being mildly interested in games doesn't have an algorithm go "If you liked that, you'll love this fascist rant!"
All it took to steer him away was getting him outside and with some nice people, but those who are more withdrawn I think are increasingly being exposed to this kind of content at their most impressionable time. It almost feels manufactured.
The "pick up artist" ecosystem had a similar appeal, of selling self-help to the vulnerable. That collapsed into the "incel" subculture of blaming everything on women and percieved more attractive men.
The above could also apply to the toxic segments of the "social justice" mobs.