I would need to get to know each person, so I could understand what each one really believes and thinks he or she is doing.
In general > while a child is immature, there is no telling what he or she might think.
So, I do not think it is wise for an immature person to permanently change his or her body in ways so the person later as a mature person will not be able to have children. I mean, let's say the child wants to get more attention; so the child has his or her legs amputated, in order to get more attention. This might work for some time, but it can make an unnecessary problem for what the person as a more mature person could do, later. And if the parents change the child permanently, this is not letting the child have an opportunity to make one's choice after he or she is mature enough to make the best choice.
Why would an immature child want to change from being a girl to a boy, or a boy to a girl? For one thing, it could be because the child simply is immature. And there can be parents who are still not developed. So, is their choice making driven by wisdom and maturity in how to relate, or by ongoing immaturity? Why would they want their children to become incapable of having children? Population control??
I get how ones now are promoting dog adoption, rather than leaving poor doggies in the pound while they buy new doggies. May be ones have decided people should adopt the children already without parents, instead of having more children. I suppose certain ones might have this reasoning, but I would not try to speak for everybody.
But I have a theory > as a little boy I can see how girls get attention that I am not getting. Or, as a girl I see how boys are getting attention I am not getting. Either way, I might feel like I'm missing something, and suppose I need to change so I get what the other gender is getting.
But it might be sort of like being a carpenter and seeing how it can be good to be an automotive mechanic. If I get rid of my tools for carpentry, and do not keep developing my skills for using what I do have . . . how would you like me to try to work on your car? At least, with this example, I have some chance of doing something, in auto mechanics.
But a transgender person can't pick up new tools, right?
And having intimacy with feelings of pleasure is not the same as being intimate with another person in
God's love. Learning how to love in a close relationship is more interesting, challenging, and educational

And you can learn how to love, in whichever body you start with. And in case others do not know how to love you, changing your body can't help them.
So, what really is each one trying to do?