I couldn't relate to the line of reasoning of this chapter very well tbh. It's true slim types are more popular since they are less scary-looking for girls (specially nowadays with such a strong appeal for twinks and femboys) but at least where I live machos are not frowned upon the way the girls are saying here, so I'm not seeing the big deal. Aren't macho types super popular with gay men anyway? And superheroes are very admired.
Welp, I can only say it's probably a Japanese mindset. Anyway I think the closest female equivalent would be gyarus? Girls that rebel against the ideal reserved Japanese woman image and go full power with heavy make-up, skimpy clothes, lack of modesty, some even tanning their own skin? Basically girls that pride themselves in looking fashionable first than anything else.