Gregory Gorelik in Quillette:
Wading into the turbulent rapids of the politics of sex, gender, and gender identity requires a life vest. Inevitably, one is bound to upset one or another political current, be it transgender rights or support for traditional gender roles. If I cannot hope to achieve a rapprochement between the two sides, I can at least try to anger both. But before I get into why many of today’s gender activists are misguided, I will first explain where traditionalists go wrong.
In support of transgender rights, and in opposition to reactionary ideologues intent on drawing battle lines across America’s public bathrooms, it is a fact that transgender identity cannot be dismissed as a whimsical choice made by some jaded, politically correct millennial.
Nor can it simply be reduced to a mental disorder that is in need of immediate medical treatment. History and anthropology present us with numerous examples of individuals not conforming to traditional gender roles, from Roman emperors to entire social classes of people.
And in the scientific realm of sex development, it is well established that sex-typical (normal) development is not activated by a single, binary switch, but relies on a complex process regulated by genes, hormones, and biochemical receptors.
More here.