“why are they catering to his fantasy of pretending to be a girl?” -— He could claim he is a lesbian. I am not kidding. I knew a male years ago who had the surgery, and said he was a lesbian.
There is one whose Twitter I sometimes read, who is the son of a friend of mine from school, many years ago.
He is transitioning to become a woman, supposedly. And his fiancé or fiancée (??) is also a male, who is transitioning to be a female.
Truly, I don’t get it at all. I think it is more about trying to be weird and victimhood than anything else.