Your concern has been the medical and psychological concern for a while.

This recent research has found that top surgery has a very small rate of regret. https://jamanetwork.com/journals/jamasurgery/article-abstract/2808129?guestAccessKey=43a62af8-3042-4678-b29d-3430c3ff98c1

Given that people are happy with their life changing treatment, the regret is often they wish they could have treatment sooner.

Puberty is a bitch when your straight. Especially given the powerful norms you are expected to fill having your body transform into an alien sexual body. Puberty can result in devastating psychological issues.

You don't identify your body as your own, and people look at you as a sexual object. So what do you do?

This is medical science, progress has been slow and steady for the past 40 years on this topic. The science is there to back up this treatment.

I support your concern. But given the science and the proof of the effects of this treatment, we have to accept it, and leave it to the parents, the professionals, and the child to make the decisions.