This is a very typical and annoying way that westerners think. OH he's 14, he doesn't know, he is not allowed too, he is too young to make those decisions. Lets rather suppress and try beat it out of him with a Jesus stick and f#$k the rest of his life and hope he returns to normal.
I have met many ladyboys here, sexuality is not frowned upon, it is encouraged no matter what you want to be. I have friends who started hormone treatments at the age of 12 because they knew. Students who are in grade 8 (13 yo) know that they are going to be ladyboys and they act accordingly because that is who they are, they are not discriminated against and forced to do something else.
The thing about the natural growth is that when they take hormones so early on they grow with those hormones, effectively they grow into a woman, then they do the sex change later on when they can afford it and become fully fledged "ladys".
TLDR; Modern society should chill the #### out and let people do what makes them happy. Who is it harming? You? No. Them? No. Their parents? Maybe, but they will get over it.