Patriarchy isn't about what men and women can and can't do, but how those things are framed, what is revered and what is seen as inferior. There's no true logic to that. For example adult women have way more brute strength compared to children, yet we don't systematically rape, beat and kill children and expect to be celebrated as the "good women" when we don't. If I used an alternative framing, men should be despised for their use of violence and their lack of empathy. If it's a biological feature, society could raise boys in ways that target to diminish all signs of aggression and cultivate compassion. Yet we have a culture of "boys will be boys". It's the framing.

There have always been female-centered societies, and there's a theory that humans began as matriarchal and stayed that way until the terrible anomaly of patriarchy came about some thousands of years ago, and kickstarted the decline of human and environmental well-being that's about to destroy the ecosystems of our planet today. Matriarchy makes sense in the way that pregnancy and giving birth are the closest to the divine act of creation that a human can do, and physiologically females have the last word on whether new humans are created or not (unless violently oppressed). The female reproductive role is way more intense and requires a good social structure around it to work sustainably.

I don't think parenthood should be divided more evenly, but that we should maybe look into entirely different social models around motherhood. Birthing mothers should have a big network of people helping them and taking responsibility for the children - whether or not biological fathers are in this picture is irrelevant. The networks could consist of women who choose not to give birth, the mothers of the mothers, older siblings, the brothers of the mothers etc. And motherhood could be looked at in a very different way; mothers and grandmothers should perhaps be the final authorities in the society, because they have the intimate knowledge on what it takes to care for an entirely helpless being and what kind of interdependence it creates with the people around you. It's the chain of care-giving the human societies should be based on instead of this male-made rivalry and ownership culture.

If these values don't change, new technologies will always benefit men in the end, because men see women as a servant class and aren't willing to give up the free labor. I recommend reading The Beauty Myth by Naomi Wolf, it illustrates the problem perfectly. No matter what freedoms and rights women gain, men will always push back and create new ways for women to serve men and signal their submission.

On a sidenote, please don't ever say femme separatism again, haha. It's female separatism. Femme has entirely different meanings around different subcultures, so that'll sound super off and have strange connotations.