I’m sorry, Ms. Johnston, but you are mistaken in your reading of that study from Sweden. It only compared post-operative transgender people to the general public, not to trans people who had not undergone surgery. Furthermore, those differences were only demonstrated by those who underwent surgery the earliest — in the 1980s.
The author of that study, Dhejne, has repeatedly rebuked those who try to draw the conclusion you just drew. She supports affirming trans people, including allowing them to pursue surgeries to address their gender dysphoria. You can read an interview with her about these topics here.