How would you even navigate that in the bedroom? I mean, the current line of thought is that what's in someone's pants ≠ gender, but that's also where terms like "front hole" come in. Or much less likely considering the sort of person who typically identifies as NB (the one man identifying as NB I can think of who's into women is Ezra Miller), but I can't think of a gender neutral nickname for a penis, only the ones like "girldick"

as used by full on MTF troons.
And that's only getting into terminology - I swear I remember reading a story of a female they/them upset that her boyfriend was treating her "like a woman" in bed. What's he supposed to do - call her
heckin' cute and valid or a
smol bean while he nuts in her?