I strongly believe there are actually two different breeds of trans: gay and autistic. No need to explain gays in denial. But autistic trans specifically seem to have another issue.
Specifically, while being attracted to the opposite gender is normal, an unexplored side effect of autism seems to be that instead of that attraction incentivizing them to seek a partner, their mental illness, coupling with internet grooming validating it and making it worse, makes them want to be instead of be with.
In other words, it's a mere perversion of normal sexual attraction. Men loving femininity and cuteness is normal. It's just called "being attracted to women" or "being straight." What's not normal is not desiring such for a partner but on yourself. I think this is the source of AGP and the true root of autistic trans cases. It should be attraction, not envy.
This also explains why they are just straight with extra steps, and why trans autists are rarely also biologically gay. They desire feminity so much they want it in themselves and a partner. This is a side effect of their autism, and poor self identity. Autists hate themselves but their biology tells them to love the opposite sex so they want to be them, instead of striving to be liked by them.
tl;dr Autistic transness It's just a perverted form of straigh sexual atraction. Atraction turned into envy and narcissism.