[orangecat]

Here [1] is an article on how cultural gender inequality leads to poorer maths results for women, and fixing that cultural inequality fixes the maths results.

That is an interesting study which demonstrates the opposite of what you seem to think it does. Here's the PDF: https://www.kellogg.northwestern.edu/faculty/sapienza/htm/sc.... It shows that the as cultural inequality decreases, the relative performance of girls rises in both math where they end up about equal to boys, and reading where they end up even further ahead. Take the sum of the gap values in the first chart; they're all between 40 and 60 except for Iceland which is over 70. (Edit: no, I'm bad at math. Iceland's relative gap is about 50 as well).

So if you point to the more equal math scores as proof that there are no innate differences between boys and girls, you now have to explain why the reading scores become even more unequal with increased gender equality. Is it just that Norway and Sweden are hotbeds of discrimination against boys?