I think the title is bombastic. And I haven't read the article, but yes, there's a school of thought that some trans people have body/gender dysmophia. Like any mental health condition, including anorexia, this can be the result of trauma, systemic social issues, personal hardships etc.
One option for treatment, that is being pushed more and more now is undergoing hormonal treatment or having operations.
Others have intensive therapy and find they can cope with other support systems.
There are others who transition who don't have dysmophia, who didn't previously question their gender but who wish to be treated as the opposite sex.