Thanks for the info, flop. I don't have kids so I can't really relate to stuff like that. I'm largely ignorant though I'm aware (slightly, through experience) that things we would consider gender fluidity happen at really young ages.  
Also, your stigma point is taken. I think it's hard to judge someone when that person isn't fully formed yet, and even when fully formed should be afforded the decency and respect that they deserve. 
I guess I would have been concerned with the same thing FC42 is concerned about, and that is the parents' role in all of this, which seems, through information in the thread, to be best left not judged.