Gormless sophistry is my phrase of the week now, thanks Vermeil 
It really is silly. No one want to think about their parents shagging, but if you have a “traditional” (for want of a better word) set up of two parents who conceived you together in the absence of any outside help, then it is 100% sure that you had one parent with the means to make large immobile gametes, and one that makes small motile ones, so one of each sex. It’s idiotic to pretend that you couldn’t possibly comment, as if how babies are made is some esoteric, unfathomable mystic process.
My parents are gender critical and know exactly how they made me. I was, in fact, brought by storks of course (because eeeeuuuuuuuwwwwww otherwise)