Banning users from using unspeakable slurs feels like an acceptable reason to punish someone...and it's not a new reason and it's been enforced for a while online (and in rel life), and even here( at least I hope it still is).
For instance if I were to go on a tirade and label African Americans as the n-word, I'd be banned.
Or if I called the gay community a bunch of ::synonym for bundles of sticks::, I'd be banned.
If I referred to women using grossly sexual comments, I'd be banned.
If I called all people of the Jewish faith the k-word, or labeled all people of the Muslim faith as terrorists, I'd be banned.
And calling gender affirming care mutilation is in that same category.
It's absolutely vile behavior that has no place in society...and it's not a hard concept to understand.