Puberty blockers aren't reversible, because puberty has an end date.
Also puberty is a natural function of the human body. We can only do our best to support children going through it, but it's not even worth contemplating whether we should "let" a child go through it or not. That makes no biological sense. For better or worse, humans are mammals whose offspring require _significant_ amount of care for much longer than any other mammal. We might not like it on a theoretical level, but practically speaking and evolutionarily, parents are responsible for their children until their children come of age.
When it comes to legitimate trans kids the aim should be education of and societal support of parents to be as informed as possible, not to circumvent them if some _other_ adults deem it necessary. A doctor is not the legal caretaker of a child, only the parents are.
Also puberty is a natural function of the human body. We can only do our best to support children going through it, but it's not even worth contemplating whether we should "let" a child go through it or not. That makes no biological sense. For better or worse, humans are mammals whose offspring require _significant_ amount of care for much longer than any other mammal. We might not like it on a theoretical level, but practically speaking and evolutionarily, parents are responsible for their children until their children come of age.
When it comes to legitimate trans kids the aim should be education of and societal support of parents to be as informed as possible, not to circumvent them if some _other_ adults deem it necessary. A doctor is not the legal caretaker of a child, only the parents are.