Most parents are fine with gender non-conforming children (in the parent's mind of course - the kid is just being themselves). It's not a panic for them to ask why modifying their child's body to match their toy choice is so important.
2. They benefit from having extra time to make a decision. When you (unnaturally, via the force of law) block children from receiving medical care then you cause them to develop sex characteristics that don't belong to them. If you think about it, you are doing to these children much worse than anything you are suggesting trans advocates are doing.
> develop sex characteristics that don't belong to them
They do belong to them. They're the only working sex organs that child can ever have. Anything else is a non-functional at best.
> extra time to make a decision
This in untrue. puberty blockers can only work safely to delay puberty until the regular time so that it dovetails with other processes. When you delay proper pubertal changes you can never restart the process which cripples a child for life mentally and physically.
> you are doing to these children much worse than
I'm telling the truth. Wild hormonal interventions and genital mutilation surgeries are not healthcare, even if they're performed by people in lab coats.