This doesn't surprise me in the slightest. I have long been of the view that many people who identify as trans are not really 'born in the wrong body' so much as keen to escape the stereotypes imposed on their sex. They're also very self-absorbed and instead of trying to change the system so things improve for everyone they focus on changing things just for themselves, because they also seem often to think that they are very special and precious and other people who just get on with things are dull and ordinary and less important, so don't really deserve any better.
If you're a boy from a very socially conservative family, you hate rough and tumble play and long to be allowed free rein with the dressing up box, you probably get used to hearing over and over again 'Put the princess dress down! You can't play with that. Dolls/dressing up clothes/pink t-shirts are for girls, not boys. You should be outside with the other boys, playing football. Oh, for goodness' sake, not tears again! You're a big boy now, you're nearly 5. Crying over every little thing is pathetic, it's the kind of thing girls do, and you're not a girl' etc etc. Doesn't take a great stretch of imagination to see why a little boy from a background like that might start to wish he was a girl, and see that as a solution to all his problems.
What is so horrifying is that instead of helping him and his family to accept that actually what he wants is OK and the sky won't fall in if he is allowed to do non-stereotypical things, medical and other professionals are now saying 'Quite right, obviously something wrong there, he needs treatment'.
Equally horrifying that girls having a bad time with puberty are also being told they can opt out of it all with drugs and surgery, instead of society trying to do something about predatory male behaviour, the toxic influence of porn and so on.