I agree in the vast majority of individuals sex is clear cut and unambiguous. It’s also clear that humans are sexually dimorphic.

However that doesn’t mean that ambiguity in sex doesn’t exist, and that sexual ambiguous in individuals is impossible. Sexual ambiguity isn’t common, but equally it doesn’t represent an aberration or break some natural law.

So I take issue with the idea that determining sex is universally trivial, and those that dismiss real cases of sexual ambiguity as political correctness gone wrong. Its just that sometimes people are born who don’t fit neatly into commonly held categories, it doesn’t make them special, it just means they’re unique on axis that most people aren’t. Most of the time that nothing more than an interesting observation, but sometimes these people need help to understand how they fit in a world that culturally assumes they don’t exist.