When transition was gatekeeped? Do you mean when it was not possible to get hormone therapy below the age of adulthood? When has transition been gatekeeped but allowed to teenagers?

It was always gatekeeped before QT forced their idea to self-proclaimed gender and now it's easy to change gender marker in the ID, especially for adults, even not having gender dysphoria

what is FFS?

Just google it. Tl;dr: it's surgery in the bones of face. Example: https://i.pinimg.com/564x/23/71/e9/2371e9bc1a0d0b22afa2b3ad8dec683e.jpg If you gott hormonal blockers when you was a teen, you don't need FFS. If you don't, you often need it

Well, what I'm "not" is a believer in trying to grant those wishes just because they're desired.

I think, GC mostly have by unknown reason lack of empathy and can't imagine real life of transwoman and issues which she faced, and why it happened. I think, it could be reason why you so easy suggest something what can triggers millions of deaths and don't worry about it. If you agree that it's possible, how do you think we could solve this problem? How to properly tell about this experience? Especially to be understandable for GC? I want to, but I don't know how.

From what I understand the suicide rate does not go down after transition

It's not true. This is meta research: https://whatweknow.inequality.cornell.edu/topics/lgbt-equality/what-does-the-scholarly-research-say-about-the-well-being-of-transgender-people/