I don't understand why a parent would want to put their child onto this path without being absolutely sure that they'd already exhausted all other options.
I as a tomboy growing up. I liked wearing dresses and having my long hair put up. But I also spent most of my days climbing trees and building dens. I occasionally played with dolls, but was more interested in reading or being outside running about. I can remember being about 5 or 6 and going through a phase where I insisted on standing over the loo so that I could pee standing up - because I thought it was unfair that boys could go to the loo so much quicker and more easily than girls. I also remember being around the same age and pretending to 'shave'; my Dad would lather up my face and I'd use the end of my toothbrush whilst we stood side by side in the bathroom in a morning.
When I was in my teens I had relationships with other girls. I know how to use various tools because my Dad taught me. I have never been particularly interested in 'girly' things. I do a lot of manual and heavy work when I garden, which would traditionally be associated with males - at the moment I'm in the middle of a project which involves building a retaining wall.
I absolutely shudder to think that if I were growing up right now, there's a real risk I would be labelled as 'trans' because my behaviours and interests didn't neatly fit the gender stereotype. That liking climbing trees, imitating some male behaviours, having experimental lesbian relationships alongside having boyfriends in my teens and not being 'girly' means that I must be in the wrong body and need to be a man.
I am happy with my body, I am happy being a woman, I am happily married to my DH.
I feel so desperately sorry for children being taken down this path. The physical effects are often irreversible and I genuinely worry that for every child who really does want this kind of intervention, there will be several dozen who, if left alone, would come through the other side and be happy. I wonder if the NHS has considered the possibility of class action lawsuits in future years, when some of these children reach adulthood and realise that they weren't trans and have been left sterile and with permanent physical damage.