No, don't ban him, cos like it or not we are in fact here to defend civil liberties such as the freedom of speech, regardless of how some chose to use it.
AG, get on with your job quietly and let everyone else get on with theirs. You never know, you might actually begin to enjoy it!. .If you really dislike Aircrew that much then I suggest you don't associate with them.
Now its back to writing 10,000 correctly spelt words for my dissertation.. .Toodle-pip!