It depends on the context and the impact of said gender dysphoria.
nah, kids are fucking stupid.
Kid that age barely knows what they wanna be in life when they grow up and other life question. They didn't face any real questions and dangers of the world and lack major experience - which is we don't let em vote
But we are somehow to allow them to unravel something so complex as gender identity? Is question of identity easier than that of who to vote for or not?
Cmon, let them grow up and then make decisions when they have sufficient knowledge of the world and themselves
Cause there is no going back, if you start taking HRT therapy on daily basis, even if you stop after year or so you pretty much fucked up your hormonal balance