What does your comfort level have to do with anything?
The only person who’s comfort level should matter in any of this is the child’s. Have you ever met a trans kid? Have you ever talked to a trans adult and asked them what it was like being a trans kid without caring parents such as this one has?
No one is unilaterally ‘deciding’ anything for the child. They are actually just listening to the child and basing treatment on actual data. Treatment, btw, that allows the child to grow without the effects of puberty making them miserable until they are either legally able to pursue full transition or go off the blockers. They get to decide based on their comfort level, not yours and not mine.
Ask yourself when your comfort level actually matters.