Why? Is it just self-serving prioritization?
Reflecting more, I don't think it is. I'm naively assuming that the girl-boy difference is likely biological (either female brains are different than male brains, or the differences in sex & reproduction result in equivalent human brains pursuing different life strategies in different bodies), while black-white-Asian difference is likely social, probably related to culture and poverty level (i.e. no brain differences).
It follows that in order to optimize for social good & progress, we should adapt the education system so that both female-ish and male-ish types of brains flourish (note that there is likely significant overlap) yet we should help people out of poverty (which might involve changing education, but also probably other, much more significant efforts) and change culture (make schooling & achievement more important and popular) to reduce white-black-Asian gap.
Men are physically stronger and more athletic on average, and it's so extreme that hilarious stories like this [1] come out when top-tier female athletes try to compete against men in some sports. Woman simply do not want to be working the same kind of manual labor jobs at the rate that that men have for this reason, and it would be extremely bad for society if we attempted to fix this "inequality".
But it's even more pronounced in dating/sexual patterns. Most women do not want to be "dominant" and this lack of "dominant" women is a huge problem for men who consider themselves to be "submissive". It's a very talked about issue for men in BDSM communities. And it's even more well known how a majority of women find it very hot to be "dominated" e.g. lightly choked [2]. Women simply will not prefer a society where men on average are not the "dominant" gender, at least in key aspects of society such as the bedroom or in labor intensive work.
[1] https://www.cbssports.com/soccer/news/a-dallas-fc-under-15-b...
[2] https://www.washingtonpost.com/news/morning-mix/wp/2014/11/0...
A society where women cannot find husbands with higher earning potentials would create a marriage crisis.
[1] https://onlinelibrary.wiley.com/doi/full/10.1111/jomf.12372
Frankly, all the quotas and other artificial constructions to help women should already tip people off that disadvantaging young men further will only cause more and more resentment.
We have known what the problem is and what the solution is for a long time. - Standard curriculum for non-standard children, and finding out what makes a child special and encouraging that at the expense of other things.