I don't understand how you raise your child to be this "gender-neutral".
What do you do about toilet-training? Teaching about washing and hygiene? Underclothing? How do you explain necessary biological differences to a child when they start nursery or school?
I can't see how this works.
I have a toddler dd who we bring up in a very 70s genderfree way (we encourage her to copy us when we use tools etc) but even as a baby, I would voice female-specific messages to her about hygiene, so she knew from an early age that there were certain things you did and didn't do after toileting.
I'm sure parents of boys must do that too.
So I can't work out how you bring up a child with this level of refusal to recognise biological sex. 