Lemmy.ml is more broadly federated than piefed.social, which also has a head developer that made lists of leftists to permaban. Being a communist on the English-speaking internet is already a dissenting view, we cannot escape non-communist viewpoints like non-communists can. Thus, echo-chambers to actually exist must affirm widespread positions while shutting out any dissent, which in the west means liberalism.

I, too, love to dismiss people based on my preconceived notions of their character rather than what they write.