I've never believed in gender roles per my own independent nature; or rather I've never believed that roles shape people. I think, rather, that people shape roles. Nobody can really agree on this distinction, which is annoying. Most of the feminists I know believe that the role comes first and people conform to it. Conformity is barely possible for me, so I have only the weakest vicarious understanding of this concept- and very little sympathy for the types of people who do. Prior to the industrial revolution there were very few gender roles- even right when it started there were still very few. Men and women both piled into the factories- it was the feminist dream come true. So what happened? Women started getting hurt at a greater rate than men due to their natural disadvantage regarding spatial skills, so restrictions started getting placed on them for their protection. At the same time they realized that piling everyone into the work force all the time left no one to raise children and keep a sanitary home. Women, due to their biological advantage of having one additional orifice to protect from invasion, had a lower threshold for disgust than men and were thereby more effective at sanitizing an environment, as well as possessing two large biological feeding sacks to nurture their young. Given these natural advantages for both sexes it's no wonder work was divided the way it was.
Alternatively, there may have been a great patriarchal conspiracy revolt that sprung to life during the industrial revolution; "I know we have been effectively working side by side for most of history in cottage industries, but now that we are working in massive factories with other families I just can't be seen doing it!"
It just sounds so silly and illogical given the accrual of all the little distinctive facts, but if that's the angle you take on gender distinctions the idealized steps towards a just reckoning are going to sound just as silly unless you're also taking that angle. You can't impose social constructs or culture. People do what makes them happy; what they're good at. You don't need to worry about them outside of giving them freedom- which they have. And just because most women x and most men y, it doesn't mean it's a product of a conspiracy that needs to be rectified. If you try, all you end up doing is imposing your will against people's personal choices to the detriment of the majority for the sake of the minority. That's as toxic as it gets.