Sure, the anatomical features we use to categorise people into genders have always existed, but the categories themselves are made up and there’s a rather large amount of overlap between them. The more strictly someone attempts to enforce a given set of criteria as the basis for this categorisation, the less practical utility their definition tends to have in terms of everyday use.
Intersex. And there are more of them than trans people per 100k, I believe. Yet somehow they’re never brought up.
Many (maybe most?) end up getting some type of gender-affirming surgery very early on, but not always. And who knows, going forward.
I have never seen “hermaphrodite” on any government form. What do they put down?