How things became

Once things settled:

• Women started breastfeeding their loved ones, even when they exceeded the age for breastfeeding, after realising how beneficial it was for this kin. This often becomes an encouraged behaviour by the person's mother while those who avidly want or require breast milk will often ask a close friend and sometimes even random women for their milk. This is mainly possible due to body positivity, but also due to the changed brains of women seeing men sucking on tits in a maternal and erotic fashion.
• The breastmilk industry boomed for a bit but when women started doing it in house the industry quickly died off since the small niches switched to family and friends once drinking human breast milk became an acceptable practice.
• The massively improved brains of women created a transition of laws and labour, allowing the workaholics to easily pick up the slack of the reduced labour forces while qualities of life improved around the world. This means that less than 10% of the world actually works while the rest is automated in eco-friendly systems or is handled by the women whom can handle the work of 200 pre-change men each. Education is still pursued and people still live relatively similar lives but there are far more games, mega contraptions/projects like inter-continental bullet train networks or investments into science projects. People are free to go from kindergarten to university thanks to free education and no stress on the people, free food, free electricity, clean drinking water, and a lot else. After a person finally thinks they've gained the necessary skills, they'll enter a passion and use reliable programs to create teams of people willing to make massive games like Dark Souls or Minecraft.
• Males could still fight but their strengths were designated to firearms at long range since modern women could compete with close-quarters firearms. Some male martial artists adapted with their own styles to combat the change but they found it incredibly hard to beat a female martial artist of any discipline.
• Cops became almost exclusively women with men put on support roles or used to accompany women as helpers and the like. It's not that all the organisations became sexist but the mortality rates of men suddenly skyrocketed as women found themselves unable to handle their strength and taking out all sorts of veteran cops. Even with female fighting tactics of taking on opponents bigger and stronger than them getting given to the weakened males, women were superhuman compared to modern male standards, cutting off 90% of dudes from being able to respond adequately to a woman's attacks, especially if that woman already trained in how to take down fellas before the change, easily spotting markers.
• Body positivity and awareness of physical health over the acceptance of fats as people grew, still seeing chubby people as average people but also with the understanding on both sides that they socially need to improve their health for their own good.
• It became customary for men to court women for social prospects regarding longevity and a happy marriage. In this way, although men were kinda like items on a shelf, the women retained their status as rewards/trophies for successful mating practices, keeping aspects like males confessing to women as a common trait while also making it very likely for women to go up to men they like and ask them to be theirs, disregarding their shape or form since a woman's pussy juices could make the male's body change in whatever way they wished besides race.
• Bathrooms were initially desegregated due to women no longer needing to fear men, but were re-segregated when close-minded motherfuckers realised women were the ones coming onto men and there were still perverts on both sides. Also, the massive women required taller bathroom stalls and they were heavy.