I don't think Rachel is lacking in curiosity, Annandale. I read her comment very differently. I agree with her that not jumping to endorse gender confusion is a reasonable course of action. I also agree that any treatment should wait until people are legally adult.
Authorities have said that even social transition can be harmful, in that it's so fashionable to be transgender in some circles that kids can find it very hard to change their minds once they've made it public. I definitely wouldn't encourage it.