Don’t waste your time on this guy. He’s just a troll, and therefore feels special attachment to the trolley. You can easily back him into a corner where he’s require to call the current US President “a left-wing New York liberal”, then continue infuriating you with arbitrarily requests to prove everything from first principle.
Calling people you disagree with trolls and then going back through their comments to post irrelevant ad-homs in other threads doesn't seem like it is within the spirit of the commenting guidelines as I read them. Maybe I'm just reading it wrong.
(C. F. https://news.ycombinator.com/item?id=18618393)