I'll tell you how I came to identify as genderqueer (what used to be non-binary).

Basically I was swinging the lead at work and surfing the net and I came across a privilege score sheet from some uni (might have been on reddit). Something like this https://images.app.goo.gl/EXurFH2HBjnyeQvV7.

Now I added up all my attributes and lets just say I was woefully low on oppression points which I was not happy about. I was very much in the mood to nurse a victimhood complex at the time.

So being my corner cutting, rule bending self I looked how to game the system. I saw pretty quickly that trans gave massive victimhood points. Now if I'd been born today I would have been a trans kid. I was desperate to be a boy and not grow up to be a woman between the ages of 7 and 12. However at that point I was very much happy in my skin and so I googled "genderqueer" and it said something along the lines of "anyone who feels they don't exactly fit their gender is genderqueer. I thought "that's me" (but of course that's everyone).

So I identified as genderqueer for 2 years until I came to my senses.

And you if you think that's a bit mercenary I bet you a good half or more of NBs are defining that way for the same reason, to game the system.

I mean it's not like you can turn round to anyone and say "no, you completely fit the gender stereotypes so you're not non binary." They purposely define it so it can include basically everyone.