You are correct, it is only reversible care. Nobody gets a sex change under 18 in the US due to minor status consent and permanent procedures like that. Unfortunately you will find it hard to prove something that doesn’t happen, happened. That’s why they choose this route so they can claim that they are making sure kids aren’t getting sex changes by getting the medical/therapy records for anyone Trans.
The problem is that it’s just so they get their info to persecute them, which even if this gets stopped in court it keeps Trans people from seeking professional care due to completely legitimate fears of future breaches. They win whether they get the records or not.
We also used to have acid rain regularly, and we tore a hole in the ozone. It’s never a bad idea to watch the consequences of our actions and impose restrictions on them to keep us all safe and healthy.