There are bits of truth in there. Yes I do think patriarchy came about in part as an attempt to control women’s bodies in order to establish male linage. There is a strong link between patriarchy and the importance placed on monogamy. Interestingly in hunter gatherer tribes patriarchy is not the norm, and in many groups monogamy isn’t the norm either. ...don’t forget we are all part Bonobo. Bonobos are a very friendly group!
“Patriarchy is more socially stable” what evidence might there be for this? These egalitarian civilizations Çatalhöyük, the Indus Valley civilization, the Minoan civilization, etc. all lasted 1000+ yrs. That seems pretty stable to me.
“Any plan to fix society in any way built on denial of basic facts like sexual dimorphism is doomed to fail.” Not sure what you mean, but certainly denying the reality of biology isn’t going to help anything. Why does this come up for you?
“What is disappointing is that digging up facts for maximal understanding of the reality of how we got here gets you kicked out of both camps. They want to win more than they want a better society.” I’m not sure what ‘both camps’ are here, but yes, humans have some lingering issues with this tribal thinking.
“As for violence, I absolutely believe that violence or the threat of violence is always looming in every human interaction.” I would suggest you find better friends! Certainly violence it’s a factor in a lot of interactions. I would know, I'm a woman that walks around cities by herself… but is that how we should arrange our civilization? Is that what we want? If so why not go rejoin some Chimpanzee troops? ...don’t forget we are all part Chimpanzee. Chimps are a very violent group!
It would seem that patriarchy is not at all the norm in human history, but we experienced quite a lot of in it in the past few thousand years. And so the question is, why?
It’s complex, but the TLDR is violence and pregnancy! I wrote a bit about it here, https://hannahmr.com/an-answer-to-red-pilldom/#patriarchy-natural