I think some of us here have missed a nuance here:
BM is not medieval Europe. It is a medieval fantasy world. So no, misogyny or prejudice of any kind are not inherent to the atmosphere. It's entirely possible Earth could have gone through a medieval era with a female dominated societal system or even a neutral system. We're not missing that element (as we've come so close to saying a few times here), it's that few willingly create it. I don't believe SMA means throwing those prejudices in, it means keeping the obviously OOC stuff out.