We are here to share thoughts, not to determine the fate of anyone. And you don't know if some of that "opinionated people on the internet" can be facing the same situation, do you?
By the way, if you think that way, that doesn't mean that your against this kind of forums?
What I mean is that we know very little about these individuals, so we shouldn't rush to judgement.
I wouldn't endorse the parents' decisions without knowing more. But I certainly won't condemn them. The people who are condemning them, in such damning terms, do nothing but contribute to the culture of bigotry and prejudice these people will have to face.
So you're saying anyone who didn't have gender identity disorder as kid is not qualified to comment on the issue? 
No, I'm saying that the vast majority of are currently living with the gender we felt comfortable with as a child. Which means that when we were kids,
we were correct about our gender. That experience should encourage us to take the kids' feelings seriously.
I agree with you that the parents ought to be very cautious, and that it would be preferable to wait until the child is older. But puberty means that they can't wait forever. It's hard to imagine something more miserable than going through puberty in the wrong body.
Also... I hope you haven't spoiled the end of Cart Life for me!