Why can I be banned from commenting with no recourse (or even why)?

Why can I be banned from commenting with no recourse (or even why as I dont use bad language)? If I say “I hate the C programming language.”, is that bad for the use of “Hate”? If I say “You made an error”, is that banned?

There is no recourse and no reason. There should be a challenge opportunity. I will be banning TechRepublic from my reading.