Asklemmy

federation certainly allows the bubble to close - {dot}world is an example; zero hate, people can absolutely choose to ensmollen their PoV if that makes their world safer. the nice thing is, interesting, thriving alter-views are only a federated instance away :-)

I tend towards the democratic socialist point of view as a default, but damn-me if hexbear isn't both entertaining and informative, even if I disagree with some of their more... spicy(?) positions (sometimes vehemently).

lemmy{dot}ml is one of the most widely federated instances around, primarily because its a pretty diverse mix of lefty and lefty-ish ideas. lemmygrad{dot} hexbear{dot}net and blahaj{dot}zone and others equality as infuriating/interesting are all accessible from lemmy{dot}ml. its a pretty ideal instance, for me at least.

one thing I do try to make a point of doing is preferentially interacting on non {dot}world posts and comments. many peeps will post across community instances to encourage engagent diversity. keeping things active on non-{dot}world communities helps everyone.

Lemmy.ml isn't really defederated. Individual users may block it, but that doesn't stop me from seeing their viewpoints, it just stops them from seeing mine. You could make a Lemmy.zip account, and just subscribe to the communities across instances you want to see, then scroll by "subscribed," making your own local feed.

I don't know what you mean by "moderately conservative communists," communists are definitionally radicals.