You’re right - it’s similar to how men have nipples for no reason except that they are formed before sexual dimorphism begins to differentiate a male fetus from females. In defiance of the typical MAGAt’s view that sex is fundamental, essential and entirely binary, it’s more of a vestment that each of our core selves is garbed in. The morphology of tissues being signaled by hormones, you can easily imagine that it gets tuned differently for different people.