I believe you’ve answered your own question.
Lemmy isn’t Marxist-only. The majority of Lemmy users are what the more vocal Lemmygrad and Hexbear users deride as “libs.” As a thought experiment, imagine that you are one of us for a moment and then browse Local on one of those.
DON’T BE FOOLED! This post was made by the cat! It wants narrower TV stands so it can knock them over easier when its owner forgets to feed it!