This is firmly in the realm of semantic definition that most people don’t need to know IMO, definitely not in casual conversation. Like the precise botanical definition of a nut, ‘true crabs’ vs other kinds of crabs, and other such specialised definitions in various fields of study. For everyday discussion, broad labels are fine. Non-binary, agender, gender-fluid and maybe more that I’m ignorant of can all kinda be used interchangeably in most contexts and I think there’s nothing disrespectful in that. Expecting more is expecting too much.

If talking with one’s therapist about it or in circles where this is a main topic of discussion, yeah precise terms are useful, but outside of that it’s fine to mix them up.

I just felt this needed to be said. I’m absolutely in favour of people like you chiming in with the definition though, in the right context like here.