Lemmy.ml grew too large during the early days of June. They started to recommend people to NOT sign up for lemmy.ml and find another instance. The next instance that stood out was beehaw which rejected signups if they didn't like your answer as to why you wanted to join. After that, lemmy.world stood out the most.
Communists yes, communists no. Marxist Leninists aren't representative of all of socialism or all of communism. They'll tell you they are. As well as a lot of other things. Don't believe em. Capital C Communism is the noun they are most commonly identified by. But there are other types and scales of communism that are benign and often heavily disagree with Leninists. As a socialist myself I think debate is good, and tanks have no place in them. So I generally don't side much with ML or capitalists.
You may know all that stuff. But I know most don't due to the repressive censoring nature of capitalism. Which is the reason I mention it. Not to be pedantic or anything.