Right. Hormones cause an insane amount of changes. The texture of my skin, my scent, how much oil my skin produces, the haemoglobin in my blood, the size and strength of my muscles, how much fat my body stores, and where it goes, how attraction feels, how emotions feel, what I find rewarding. Certain physical attributes do require different interventions but the vast majority of sexually differentiated traits are decided by the dominant sex hormone in the body, not by the XX/XY genes. See: XY females for instance who have non functioning androgen receptors. When we talk about biological women, it’s also ignoring intersex variations. Biology is way more complex than we make it out to be.