Like BFoundAPen, I have spend a good deal of time studying and researching trans issues. I’m not aware of any place in the world where gender-affirming surgery is available for young adolescents.
Nor am I aware of any informed claims to the contrary.
I do know that Thailand, which is known as a center of highly skilled gender-affirming surgeons, and a place where many Europeans and Americans seek surgery, restricts it to people who are 18 or older.
I’m unaware of anyone pushing them to change the law on that.
I’m equally unaware of anyone in the US or Europe pushing medical associations to change their policies.
As much as I read and write about trans issues, if children were receiving gender-affirming surgery somewhere, I’d know about it.
But as extensive as my own knowledge is, Google is much smarter than I am. And Google doesn’t know about children receiving gender-affirming surgery either.
Why? Because it isn’t happening.