Hey nice hyperbolic strawman you've got there. It's actually the opposite. Transphobes think sex is interchangeable and can be imposed from the outside. The rest of us think gender comes from the inside and simply believe in loving and supporting people regardless of how THEY express their own gender.

People like you want to impose an external concept of gender onto trans people that doesn't comport with their self image. You want to forgo the medical science and drive trans people into depression and suicide because the idea of it makes you feel yucky.