There was a post on !mildlyinfuriating@lemmy.world called "Lemmy is losing the war against reddit. How do we change things?" Looks like it was removed but there were a couple good discussions there. In a discussion with (I think it was) @hendrik@palaver.p3x.de we came up with this.
So Reddit 2010s demographic.
Basically, but with mildly different flavour profiles. Instead of being hounded about men's rights from a fascist, it's being validated by some weird version of a communist.