There are two basic reasons for people pretending to be the opposite sex.
For men, it’s because they’re sexual deviants and want to shower with girls.
For women, it’s because they believe their severe lack of attractiveness renders them unable to compete with most other women.
Made a tweak to your thesis, I think it has a lot of merit but form some/many of these girls the root issue is that what they see in the mirror doesn't match what anyone else sees when they look at her. It's a shame really, and it makes them too easily manipulated by people who want to use them in one way or the other (either to take advantage of with sweet words or to co-opt into mutilating themselves on the promise that will make them feel good about themselves finally, all to bolster their own advocacy)
The DOE opens an investigation and quickly sides with the trans gender, f the parents and the girls showering with “it”
That pretty much sums it up.
THE GIRLS SHOULD FILE CHARGES OF INDECENT EXPOSURE.