Can you be any more derisive and misinformed?
What 16 year old should be getting a double mastectomy?
Either you have no fucking idea that a double mastectomy is a major surgery and is life limiting in the scar tissue or you consider that a 16 year old has the capacity to know exactly what they want in life. I can tell you as a parent of a 16 year old, many of them have no idea what courses to do for their future education let alone having the ability to understand the ramifications of transitioning. And I, myself, made major life altering decisions at 16 years old that I regretted in my early 20s. 16 is not some magical age of enlightened thinking even for a mature 16 year old.
And do you understand the failure rate for a phalloplasty? The operation you euphemistically call ‘bottom surgery’? The one the rarely works and again leaves a female body significantly debilitated even when ‘successful’?
Do you even understand the life limiting and usually life shortening negative side effects of taking exogenous testosterone as a female human of any age? For a start, what teenager needs to go through a condensed version of menopause?
So your post simply shows you are either never been a parent or you have no concept of the treatments you speak of. Either way, you also seem to not understand that the majority of ‘adult’ transitioners are also very vulnerable and simply not getting the level of care they should be before they start any treatment at all. Just because a person is 18 years old doesn’t mean they are not incredibly vulnerable and being misdiagnosed due to waiting list pressure or malpractice.