In that respect I was talking about the journalist bans rather than the elonjet bans. Now that I see he has weighed in on this issue it does seem to be that he was involved in the policy. The policy itself seems at odds with his previous statements but the no doxxing rule does seem to be arguably a reasonable thing to have.
Whether those banned were actually in violation of those rules I don't know. I would have said remains to be seen, but I fear such details will be lost in the news churn.