Is that because boys are bought/given/encouraged to play with cars early, where girls aren’t?
I loved vehicles and wheels as a kid, so bought mine lots. I always wanted a scalectrix but never got one cos girl.
i remember once my toddler with me at a school event, and one of the mums (with boys) starting on about how she would really want a girl, all the pretty clothes, doing hair etc. she only got boys and had to put up with car obsession, because all boys like cars, girls sit and draw nicely.
dd promptly sat down, opened up her little pink handbag, and started pulling out cars, trucks, ambulances, helicopters, and fire engines, vrooming them round.
the look on the woman’s face was priceless.
even when I was pregnant the baby met stereotypes. If they kicked it was “ooh maybe it’s a boy, a footballer”. Anything wrong and it was “it’ll be a girl, giving mum grief already”. Everything was attributed to a stereotype.
so I don’t think anything can be seen as “innate”, when babies are indoctrinated practically before birth. After all, many find out the sex so they can buy gendered baby stuff-neutral colours aren’t enough, it has to be pink or blue.