It might be to avoid impersonation.
That particular user is a pro-china troll.
See you try to just find one thing shitty people are good at, extract the most usefulness from them and when they change into their final form you ban em, dispose of em, whatever gets the most isolation for the lowest legal penalty.
And while they sit in their corner and rage (if still alive), you make sure to take great pleasure in pointing and laughing.