I could agree with a ban whole heatedly if blocking can't be reversed and blocked cannot be reverted, but I would
likely to oppose a ban it if blocking can be reversed and blocked could be reverted.
Gets a little fuzzy if it's one or the other though.
Wouldn't want someone to miss their only chance to block puberty, but also wouldn't want someone to make a permanent choice at 13-14 which can't be reversed if they want to later on.
You just stop taking them, and your body will start going through puberty. Like the other response said, they're used for cis children as well when they start too early for their body to be able to handle. As with any medicine there can be side effects.
When you stop taking them you go through puberty like normal. The idea is to protect trans kids from the irreversible effects of going through the wrong puberty, but not cause any irreversible effects if they're one of the <1% that later turns out to not be trans.
You can't get any trans care that isn't reversible until you're an adult who can legally consent to it. Puberty blockers are reversible, you just stop taking them and go through puberty. This change is completely anti-scientific and pro-bigotry. It's indefensible.