Distilling the essence of your argument, how is it any different to, for instance, heteronormative gender roles a la women for childbirth and domestic rearing?

Distilling the essence of your argument, how is it any different to, for instance, heteronormative gender roles a la women for childbirth and domestic rearing? Are societies "easier to establish and sustain" in this binary configuration purely because they "tend to self-organise as such" for millenia? I mean you may claim no one can force this heterogenous utopia but it is most certainly the future.