I’m aware of some stuff like that some instances have defederated from others for anti-communism (lemmy.world / hexbear.net), but that’s where my knowledge ends.
I’m looking to understand what instances to be aware of, each instances’ political leaning, defederation etc.
Ah, gotcha! The way I use them is as follows:
Lemmy.ml - Purely for agitprop. I look for opportunities to discuss Marxism-Leninism with those who seem radicalized but directionless, and I try to debunk or riposte anti-communism. I also host my introductory Marxist-Leninist reading list there so as many people can see it natively as possible, without fear of it being taken down.
Hexbear.net - Shitposting, gaming discussion, general hangout without libs or fash. The news megathread is also excellent, usually. I also host their Capital reading threads there, and participate in the imperialism reading group. Generally more active than Grad.
Lemmygrad.ml - When I want to relax, not feel so online, and generally only want to talk to Marxists. The people here seem to touch the most grass and are the most familiar with theory.
As for dbzer0 and generative AI, you’ll find that there isn’t really a line on it on any of the 3 major Marxist-aligned instances. The closest is that AI could be useful under socialism, but right now it’s used in the worst ways possible by capitalists, and that refusing to understand it will end up with us falling behind. For general commodities like stock photos it can be usefulish, but for art it gets far more touchy.