The father on that thread writes.
At almost-15 she is very feminine but doing nothing
No one, as far as I can see, checks whether this is a child who has any kind of diagnosis of gender dysphoria or has had any prior treatment (including therapy). They don’t, (in general, from memory maybe one did) talk about blood tests or the general health of the child. They just take, at face value, that this ‘feminine’ boy needs hormones - and remember, that wasn’t even what the father was exploring.
Then the supporters of this come here, and again demonstrate no concern for the wider mental and physical health of this child. It’s just a given. “The feminine boy must take female hormones “.
They are truly appalling people. Every one of them.