Well, you're certainly entitled to hold that belief of course (just as, for example, you're entitled to hold the belief that homosexuality is a deviancy and a mental illness). However, the problem for your belief is that current mainstream medical/scientific thinking disagrees with it. The world's actual experts in the relevant fields consider that while a someone stating they identify as Napoleon is indeed delusional, a person assigned male/man at birth who states they identify as a woman is not delusional.
As I say: you're perfectly entitled to draw no distinction between a) someone who identifies as Napoleon, and b) a person assigned male at birth who identifies as a woman. You're entitled to believe that both are equally delusional and disordered. But, as I say, the actual experts in this field fundamentally disagree with your belief*. And I vastly, vastly prefer the beliefs of the people who are actually properly qualified and experienced.... over your belief. As, fortunately, do most progressive governments and legislative bodies.
* If my beliefs on any given matter directly contradict the beliefs of those who are expertly qualified and experienced in that matter, I generally want to try to understand why the experts' belief is so different from mine, and whether their belief - based as it is on vast accumulated/aggregated amounts of experience, knowledge and understanding - trumps mine. It usually does. But I guess that's just me.
