Even though he understood he would need to wait, to ensure he was ready for the irreversible changes to his gender identity, going through puberty “devastated him.”
Female puberty might be an obvious sign that you are female, and many women find female puberty difficult.
However, it's difficult to understand how it would be more devastating than coming to terms with the fact that no surgery or drugs can fully create the effects of male puberty or a functioning penis, or lifelong dependence on drugs in a world where access to medicine is not guaranteed.
Now fifteen, Leo will soon be finishing his course of puberty blockers and start hormone replacement therapy, where he will receive the testosterone that will give him the male characteristics that are in line with his identity.
No, they won't. Neither drugs nor surgery can create a male body.