Evidence-based? The only evidence-based studies on transgender youth are from 7+ years ago (making them no longer viable) where the majority of trans youth was the persistent and insistent desire of a young boy to be a girl. Today, we are seeing a new phenomena of teenage girls wanting to be boys. It happens in clusters of friend groups. The data support it, look it up.
Transgender youth is the ONLY area of the medical field where the patient dictates their illness and the course of treatment. There have been multiple doctors that have spoken about the dangers and long-term consequences of providing affirming treatment which includes hormones, top surgery, bottom surgery, etc. without question. I support the rights of every individual to life, liberty and the pursuit of happiness, regardless of sex, class, race or background but I do not support changes without facts to support it. There is no evidence this treatment is effective. Suicidality remains high, well into adulthood in the trans community.