As usual, we get the typical bell curve, from she is when she says she is to my way or the highway.

As for me, I say she is when she says she is. That allows her to go as far as she wants and still be comfortable. If someone yells me that they are trans, I'm not going to ask for a "show and tell" or a first hand inspection of the "parts" as proof.

I once read the story of a man who always had some feminine feelings. He was having a sharp abdominal pain and was sent to get an ultrasound to rule out kidney stones. When the medical tech did the ultrasound she found something completely unexpected: some female reproductive. So, how do you characterize "him". I think after the ultrasound, the true answer is intersex. But, what about before the ultrasound? Non-binary, trans, or what?

I think that the so called definitions don't work for all cases. Am I still trans female if I still visit my parents (or grandparents) "crossdressed" as a boy when I see them to avoid telling them?