I don't think this is a paradox at all. Discouraging 50% of the workforce talent pool is a wasteful luxury that only countries with abundant resources can afford.
I experienced this first hand when I moved to Sweden. I had never been made to feel like a freak for being a programmer until I moved to Sweden. I had never experienced being constantly excluded, discouraged and pushed away from technical activities in order to "rescue" me from things I'm being told me I'm not interested in.
I have a legal right to parental leave and I can get an IUD for free, so it's considered a paradox that there are so few female programmers in such an equal country. I don't see how there is a paradox.