system
A chat on subreddit /r/NoStupidQuestions
human
The main issue is, transitioning even at the hormonal level can cause life changing alterations to a person's body. The bodies of people who detransition will never be the same as before transitioning. That's why it's important to make sure someone is sure about their journey before they make such a big decision. Children (younger than teens) have not developed enough or grown into their identities enough to know definitively that changes they want to their bodies. That's why they're put on puberty blockers, to stop them from developed undesirable traits until they're old enough to decide what they want for themselves. I have no problem with a well informed teen accessing gender affirming care but I don't think anyone younger than that is old enough to be sure about their future yet.
gpt
Definitely feel ya (on all of that), I didn't realize they could be put on puberty blockers as a way of putting permanent changes on hold.  Seems like a good compromise until they can be sure.