1) I am under no obligation to 'stay classy'. I am under no obligation to be polite. You may tell me to leave if you don't like what I'm saying, but I am still not under any obligation to tone down my argument.
See also: the
tone argument. 2) Guess what? Gender and sex are a fundamental underpinning of our entire culture. Wishing it didn't matter doesn't change that it DOES, and I will not shut up about you refusing to allow someone their gender identity just because you wish people wouldn't make such a big deal about what's between their legs.