To me banning someone is extreme. Of course, some have to run with that to become abusive, obnoxious and boring. Then there are the ones that go over the edge. Some build towards it while others are born to it.
...Virtue, morality, and religion. This is the armor, my friend, and this alone that renders us invincible. These are the tactics we should study. If we lose these, we are conquered, fallen indeed... Patrick Henry (1736-1799) US Founding Father