Puberty is a fucked up time for sure, but not everyone experiences a disconnect between mind or body, or they‘d be even more tranners and ‘Systems’ out there.Have you ever asked yourself why every one of these people has, even if they move their own "egg" goalposts because of the optics, said that they "knew" they were trans between the ages of roughly 10-17? That for some unimaginable reason, that period of time was when they started to feel that they were uncomfortable with their own bodies? That they "weren't like the other kids"? It's almost like there's something else at play. It's almost like the human body begins a massive series of upheavals and changes around those ages that universally results in a disconnect between the mind and body of every developing human. Can you even imagine such a world?
What you are observing is the onset of two distinct things, both start in adolescence, both can cause a person to erroneously believe they should have the body of the opposite sex, they can occur alone or be comorbid. One is serious mental illness, such as personality disorders or schizophrenia, the other is a paraphilic disorder, Autogynephilia.