Minors shouldn't be getting cosmetic surgery unless they have a legit malformation, like cleft palate or scars/disfigurement from an accident etc. The odd mole or skin tag is fine. But they shouldn't be getting boob and nose jobs etc, what kind of sick doctor would perform that nonsense? When you're 18 you can do whatever you want.
But there are lots of doctors who do that stuff, more than perform gender reassignment surgery, but there's no coordinated campaign by the neo-fascists to ban that stuff. Because they don't actually care about kids getting surgery they just don't want trans people to exist, which is why the locus of this moral panic has continually shifted from bathrooms and sports to concern trolling over kids medically transitioning to the latest push back against allowing kids to socially transition. The next step, which Trump has come out for, is banning gender affirming care for adults too.