I massively object to the line that it''s all down to "parental influence". I can hardly get my children to wear coats when it's raining, how exactly do you think I've convinced my asd 9yo girl that she wants to be a boy?!
I don't subscribe to the quasi-magical thinking that she has a 'boy''s brain', I think society has taught her that it's easier for her to present as a boy: people give her more space when they think she''s a boy, she finds the running games of boys in the playground easier to understand than the girls' role play, clothes sold as boys clothes bother her sensory sensibilities less.
This is a societal issue, not a parental one.
The rules she absorbs every day tell her she "should" be a boy, and no matter how much I tell her she can be any kind of girl she wants, I am one voice against thousands. Please don't blame me as against parent when your ire should be directed elsewhere!