In general, I agree the statement "you have no right to complain because you don't pay to use it" is silly. In the context of "a user violates the terms of usa

In general, I agree the statement "you have no right to complain because you don't pay to use it" is silly. In the context of "a user violates the terms of usage, is repeatedly reminded of them, continues to violate them, is banned, and then complains about it", it's not. The guy was spamming people to sell a book. It's a special case, not a general rule.