I must say that in my 11 years of schooling back in the dark ages of the 20th century [ when men were men , blah blah ]
I can't remember any boy who was unhappy being a boy and wanted to be a girl, or vicey-versa.
I mean I was unhappy being a weedy boy with no upper body strength who was the only one in the entire class
who couldn't climb the rope during PE [ the humiliation, it still haunts me ] but I didn't want to put on a skirt
and join the girls at hockey.
Can we blame the fact that many boys are brought up in a single parent, non working , female only household ?