I love your statement:
I mean, you wouldn’t trust someone’s opinion on a movie if they never saw the movie, right?
I've had that 'Gay is a choice' stuff crammed down my throat all my life by all the straights. And all my life I fought the attraction I felt to many different people, the opposite sex being only one of the genders. I fought it. The only choice I made was to finally stop fighting something as natural to me as my height or hair color. So, yeah, I'm not listening to anyone anymore who hasn't read the actual playbook.
The question of whether a non-trans person can truly understand what it's like to be trans (or a straight person appreciate what it's like to be gay) puts me in mind of the punchline of the old joke, where the Pope is standing on his balcony, declaring that contraception is forbidden, and a housewife in the crowd below hollers:
"'Ey! You no play-a da game, you no make-a da rule!"