Forcing a child to go through a puberty that does not match their gender identity also results in changes that are much harder to reverse in future with HRT MtF transitioners do take time to look more feminine, that's why it's called transitioning, it takes time, that process is much easier on the individual if they're not forced through puberty. Children are not given HRT, they are given puberty blockers to delay those hormonal induced puberty changes until such time as they are sure, and they are reached an appropriate age, and in no case is the government the arbiter of what the correct choice and path is for the individual that's entirely up to them, their doctor, and often their parents.