>> hellbanning is a generous form of dealing with the unruly by at least letting them visit and talk to those who want to hear the unruly, without either letting the unruly annoy all the guests or throwing some out entirely

That argument is convincing, but I still believe that it's not fair treatment to not letting them at least know about their ban. I didn't know that the unruly can still talk to others. That's changing things completely!