I do feel sorry for her.
But.
The examples given - joining a women’s gym where women change naked, joining the all-female WI, dating unwitting straight men who wanted a female partner - all seem to be self-defeating attempts at social contact. Why not join a clothes-on, mixed drama group, a gardening club, a walking group, a reading society, rather than the few things restricted to the opposite sex?
I know it’s the reporter’s slant on this, but it does look like this lonely, bullied boy thought that there was a different, better world of girls and women there to be joined, if only he could qualify for it - rather than a world of things to do with likeminded people of either sex.