I mean the distinction is something you learn in secondary school usually, I really can’t help you there, but you can keep throwing your strange little hissy fit if you want.

You should maybe learn the meaning of words before trying to use them, idealism does not mean “having ideals”. Idealism is the counterpart to materialism, and has been explained to you in another comment. But sure, that’s one way to respond, I guess.

“Idealism is not relevant to this discussion”

proceeds to use purely idealist arguments

I read that as “I don’t accept trans peoples gender, but will act like I do if it benefits me or my cause”, is there another interpretation I’m missing?