A) transitioning is an effective treatment for gender dysphoria and significantly lowers the suicide rate for these people
B) there is a medically accurate way to diagnosis gender dysphoria
So you say "one is death if not treated but the other is a life choice"
The trans thing is life or death too. If you have a child and they are displaying these types of behaviors (wanting to play with dolls as a boy, saying they are a girl, trying to wear dresses, etc) then you have a kid that is very very likely to kill themselves and have other mental health problems
Getting medical treatment ASAP is the logical thing to do
I know it's still relatively new and can potentially be harmful to the child if not diagnosed properly. I also understand there are some crazy parents out there who project their BS onto their kids.
But I think as a parent I would want the best for my kid so I would do whatever it takes to make sure they have the best quality of life and just chance at life in general.
If they are going to transition, they will pass much better if they do it pre-puberty. By the time they're in high school they would probably look imperceptibly like the opposite sex.
I would only want it done after rigorous tests by medical professional that absolutely rules out weirdo parents