Well, as said in the sibling comment, even for clinical sex it's not that simple. Intersex is a fact of life.

As for gender it's a social construct so using a binary qualification makes no sense. One could say it's a spectrum but it doesn't even have to be this restrictive. Why force people to take the whole package of constructs and ethos from either one? What's wrong with having a beard and makeup? Is this insanity to you?

Of course this is not about identifying as object. Please don't use mediocre rhetoric like that.