Dinosaurs and gorillas are species, not genders. Everyone has some sort of association with gender - this transcends species and individuals. With sapience involved, the association gets much more complicated. The thing is, in the mind of, say, a transwoman, they ARE a woman. A transman IS already a man. The body just does not match.
We build associations as children automatically. Tell him to deal with it.
We build associations as children automatically. Tell him to deal with it.