I know, but that doesn’t mean we should stop banning him. If he does a good job of hiding himself, that means that he’s changed, and then you know what… good for him! But while he’s still the same poor excuse for a human being, and while we KNOW what his username is, he should be banned, and banned again, till he learns his lesson, and behaves like a mature individual, or stops re-registering.
Right now, we’re sending him the message that what he’s doing is acceptable, and that he should keep doing it.