Your portrayal here of your posts…
…does not match what you actually said in that thread.
I don’t moderate that forum, of course. But just a straight reading of your posts in that thread don’t come off as some innocent point about your perception of someone else’s posts. Your posts read to me as clearly claiming that he’s lying by claiming to affiliate himself with a political party. And not in some civil, “I want to debate whether your claims are true” manner, either.