Erm, I'm afraid that isn't the case. Thanks for listening though.
As I've said before, I am a very gnc cis woman. Had two cis boys before raising my third (who turned out to be a trans boy, but was raised as a cis girl). He wore his brother's clothes, fell in with what they wanted to do - and challenged me about what femininity was.
I had zero idea. I can't do trad girl hair, live in jeans and shirts and never wear make-up. Having suffered with a mother who badly wanted me to be a trad girly girl, I was determined to raise this child to be tough, strong, independent and opinionated.
Friends joked things would be reversed and my being gnc would mean I'd have a girly girl. Yep. So I had to learn to live with pink, frills, unicorns, and the rest oh god I had to keep quiet about how I felt. Thankfully my husband learned to do the fiddly hair. Kid 3 was a ballerina, drama kid, gymnast, musician and profoundly good dancer who had auditions at Covent Garden.
And...he's still like that.
He came out to a friend aged 4, and to me nine years later.
Being a trans guy has nothing to do with being gnc, or even being on the feminine/masculine spectrum. He is still extremely feminine, and has not really changed that much. I'm the same too. We just understand each other better these days.
My mum is totally supportive of him, while still complaining I don't try enough to look female - which is brilliant. I say nothing :)
Raising a trans child makes you confront a lot of internalised prejudice about what gender really is. He very definitely explored trad "boy" things - he regularly beats his brothers at games like cricket and air hockey, much to their chagrin - and got constant lectures about feminism, misogyny and sexism. Did all the rough and tumble stuff they did, at playgrounds and home.
He isn't a gnc cis woman, and he isn't a cis man. He is a trans man who's confident enough in his gender to wear what he wants - and a passionate feminist who was always in control of his life, forever showing me which direction was his and walking his own path.