It sounds like you think Lemmy is unusual in that sense. In reality, absolutely any moderation is political. Politics deals with the distribution of political goods, goods such as attention, relevance, access to distribution channels, discourses, approval… I know I probably sound reductive, but I’m simply being systematic and consistent in using words’ meanings.

A like button distributes a political good. A chronological algorithm for a social media site distributes a political good. Saying the OP belongs to this community distributes a political good. So does saying that it doesn’t.