Thing is that however you identify doesn't impact on how others see you.
Creepy men do not ask for pronouns before creeping at the teenager that is the sex of their choice. For example.
This is where it all collapses and you get these increasingly aggressive instructions to try and completely ignore what is in front of your own eyes. And the nice people will try their best with the people that they meet, and the not nice people won't give a fuck.
I mean, if I went into work tomorrow and said that I was a transman and that I wanted to be called Dave, but that my appearance was "femme", but I was all man. Well, I could expect people to go along with it, but would the men suddenly start treating me exactly like one of the boys? Would I get a nice payrise
Would women look askance if I said "you look nice today" all of a sudden, which is somewhat different coming from a man than a woman in the office?
Well no, of course not. People would do their best to do the right thing but they wouldn't actually believe that I was a man, would they. Not literally, in every way, male. Born a boy, raised a boy, a teenage boyhood etc etc.
So this is when you get problems, because it's not enough to say you will use the right names etc, nothing less than a literal acceptance that I was a man, and always had been, a belief in that totally and with no doubt, is acceptable.
And that, well, is just not reasonable. Or realistic.