"If governments want to increase women’s participation in STEM, a more effective strategy might be to target the girls who are clearly being lost from the STEM pathway – those for whom science and maths are their best subjects and who enjoy it but still don’t choose it" I don't understand why we should try to make somebody choose a subject they didn't choose to do.
These facetors aren't limited to geographical boundaries and hence could affect the populace of countries with both low and high HDI equally.