On a certain level it’s healthy that people who have ideologies we disagree with are allowed to participate in discussions, on the other hand on lemmy tankies are an endemic threat because they themselves don’t accept or tolerate opposition, and openly abuse tolerance whenever it’s extended to them.
I suggested this elsewhere but I do think the liberal side of fediverse should build some sort of moderation compact to ensure that neutrality is maintained and that subverting an instance becomes at least harder, if not impossible.