$1:
"Alex has "gender identity dysphoria", a psychological condition where a person believes they are the opposite sex, the Age newspaper reported.
Alex has been on hormone treatment since he was 13 to prevent menstruation, it said. "
I'll make the (rather dangerous) assumption that this individual has been carefully assessed and has been treated by professionals.
That said, what the hell do the government/courts have to do with this? When he/she reaches the age of majority he/she can do anything he/she wants.