Yes, as long as treatment is not subsidized by the government

As someone who has come into contact with many children who have gone through this treatment, or even simply social transition, I have seen the regret of transitioning firsthand. If a minor cannot smoke, drink, have sex, get married, or get a tattoo, they CANNOT consent to permanent mutilation that will impair their entire life course, from fertility to economic and social opportunities. Gender dysphoria and transgenderism are mental illnesses that should be treated with compassion and reformation, not butchery.