I think the idea is to push back against the sexist framing that people are using to talk about and analyze this change, that this is because "girls are just better"

Girls are simply better at “rote-memorizing books,”... girls are more self-disciplined, spend more time studying outside of school, and are more likely to take on roles as student leaders than their male counterparts... girls are naturally more mature, obedient, and academically diligent than boys

All of these are just social constructs that are harming both young boys and girls.

popular stereotypes of boys as inherently mischievous, inattentive, and ill-suited to current educational methods negatively impact the quality of education they receive...girls who want to maintain their advantage over their male peers must be tireless and maintain strict self-discipline and management. In this sense, girls’ so-called “advantages” may become a psychological burden.