Express your frustration with someone who has been analyzing and criticizing your comments. Also, mention that you don't agree with their comments and it is better to stop wasting each other's time.
So you've conducted a thorough analysis of all my comments, have you? It's no secret you don't agree with me. Let's just leave it at that, shall we?  Or I can post comments on here--complete with examples-about how nasty and objectionable I often find the tone and content of your comments (and those with whom you agree) and we can both continue to waste each other's time. Not that it makes it any better, but I have a low tolerance for bullshit.