Back the pony up! Who is asking for him to be banned? He posted his opinion and others have countered with theirs. Is it now forbidden or in poor taste to offer a different position? Have you ever watched old newsreels of Churchill speeches? His delivery was horrible. The same with Roosevelt and even Reagan. Reagan was not a great orator in the classical sense he just hit emotional buttons better than most people.
And yes, pointing out any Bush underacheivements may lead to bannishment.