I didn't talk down. Genuinely, high school biology teaches us that there are two sexes XX it's a woman, XY it's a man. That's literally what we learn.
It's only after you dive into the science at a collegiate level or higher that you learn there's a small percentage, maybe 1-2% of people, for whom this binary understanding is not a good model.
I'm not saying it's bad to only have a high school understanding, just that it's an incomplete understanding.