This is all part of the slippery slope.
I remember in the past, there were families that believed in prayer more than modern medicine. A child would get leukemia, and the parents would say "We will pray a lot". And society was horrified. What awful parents!! Take that child away from them! Send that child to a doctor who might possibly save them! Who cares what the parents want! Society will step in and ensure a better outcome through the wonders of medicine!
And here we are. Some people might think these situations are different (leukemia is not gender dysphoria). But I see them as basically the same, and I think the key issue is: do the parents have final say over their children's medical issues, or does "The State" trump the parents?
When the issue is that you can die from leukemia, I do think the state has control. No one dies from gender dysphoria, so the state should stay out of that issue.