most of the instances I could find were filled with liberal centrists who call themselves leftist, and hate actual theory-reading commies.
something politically like lemmy.ml or even like lemmygrad would be perfect.
it also shouldn’t be heavily defederated against
The overwhelming majority of Marxists agree with Lenin’s advancements on Marxism, be they Marxist-Leninists or Maoists (not to be confused with the ideology of the CPC, which is ML). At that point, can they really be considered Marxist friendly?