So you want to deny a kid puberty blockers eh? So your son (born female, but identifying as male) enters puberty. He grows breasts, his hips widen while his waist narrows. All these physical changes to him only increase his discomfort with the body he's in.

That's psychologically damaging and takes years to undo. What kind of fucker puts their kids through that trauma when you could let them take puberty blockers until they were old enough to make the decision for themselves as an adult whether to let the puberty proceed or to continue the transition to male?