I understand that the science behind transgender issues continues to develop. That's true regarding much of medicine and science. As I said, the process of exploring any of the permanent physical change options (hormone blockers and of course surgery) is a risk/reward analysis with zero guarantees that the path you are choosing is certain to be the correct one. But my understanding of the vast majority of the cases is that they involve minors with severe dysmorphia and depression issues. As a parent, I would want the option of exploring every possible path the resulted in a happier child and future adult.
Of course, there are some horrible parents out there. Always have been and always will be. We can't legislate parents out of making bad decisions for their children. There is enough standing within the medical community that gender-care should be considered a legitimate, if very, very cautiously explored option under the right circumstances.
I think I shared this story before, so if so, apologies. I had cousins who were Christian Scientists. This choice directly contributed to the premature death of two of the three children in the family. The in-law, who was the driver of their rejection of western medicine in favor of a faith-based approach, was and remained a deeply disliked person within the extended family as, from our perspective, her choices killed people who otherwise didn't need to die. But their family made those choices and there was no legal remedy at the time to address the situation.
Gender care is far from the only opportunity for parents to damage their children, and at least in this case, there is some science and some studies to inform decision making, factors that are totally absent from Christian Science.
If we are a free country, and the choices have some scientific backing, we need to give families the ability to make their choices and live with the consequences.
