The super awful mental health (suicide rates, depression, etc. ) really is terrible, and a lot of it not only stems from gender dysphoria. Also blocking puberty is not a suitable long-term thing. Even some kind of sex hormones won't help them develop properly. Also, I will add that early detransitioning is associated with better results, allowing former transexual people to integrate into society, therefore improving social function, self esteem, and lowering rates of mental illness