Let's agree to disagree on the ISIS issue.
About the following issue. As a straight cis male I can't presume to know or understand what must pass through someone with GD, but I agree that any sort of nip/tuck should be allowed exclusively AFTER one has reached 18(or even 21) years of age and at least a couple years of therapy. A friend of mine trasitioned at 27 following quite a few years of therapy as is required here in Spain before one is legally allowed to it...
I would also say that for trans folk life gets pretty complicated as in many cases it becomes difficult for them to obtain normal jobs in most countries. Even in the most "enlightened" ones. I'm not saying its right but kids should be informed about the impact on their future even such a seemingly distant issue could be for them.
But then I'm also of the opinion any type of marriage should be illegal before 21 too soo...