To be clear thats not why people are upset... I dont agree with the reasoning but I think its important you at least understand theirs so you can understand why you upset people and get banned.
So their reasoning is this.... "My posts are mine, my reply is my space.. it is rude to come into my replies to contradict me or be adversarial, do that on your own page. This space is for people who agree with me and want help me"