A few years ago, the Lemmy Developers decided to keep their political views on lemmygrad while keeping lemmy.ml more neutral. Now they are banning users who are critical of their actions and bigotry.
Anti-Tankie posts may put you at risk of being banned from commenting and posting on the lemmy.ml instance.
Give them time, they will eventually self-defederate.
That sounds like a good idea. Saves people the effort of blocking them.