I think the answer lies in the fact that in countries like Tunisia for example, women represent over 60% of people working in STEM. Why? Because STEM jobs are the highest paying jobs. So from my perspective, the lack of women in STEM in the U.S. is not an issue but a symptom of a strong economy, as in you don't have to decipher someone's spaghetti code for a living, you can pay the bills doing other things that you are more passionate about.
Indeed. The number of women in STEM fields is also low in Sweden and other Scandinavian countries compared to in-development ones. And, nobody in his/her right mind will accuse the Scandinavian countries of being patriarchal sexists societies.
