Where exactly is the physical strength of males necessary in modern society?
The only circumstance in which there are men strong enough to so something that women can't do is at the most elite level of athletics. Any role relevant to society that would require that level of strength, we have machines for, because the majority of men and women are not elite powerlifters, and because they probably need way more strength than is safe even for those elite athletes to require all the time.
And then yes women can give birth and breastfeed (though it doesn't seem like being raised on formula alone is much of a problem these days). I don't see why those biological features need to affect roles as much as (some) people seem to think they should.
People with different skin colours have different resiliences to sun exposure, but just because the sun is a big part of our life doesn't mean we NEED to shape society around those biological differences.
There's lots and lots of jobs where physical strength makes a fuckton difference. I don't see construction workers, garbage people or figherfighters using exoskeletons yet.
Also, ask women how their mood and abilities swing during their cycles. Both menstrual and life cycle with menopause and stuff. Some have it easy, but many women I know have quite big swings in both cases. And yet modern society requires one to perform the same day in day out. Which works out pretty well for men, but for women... I'm not so sure.