Okay this is gonna be the last thing I say on this - a lot of the struggle that women today face comes from the idea that women only exist in relation to something or someone else, like children or a partner. Eg, your role is to start a family, wear makeup and take care of your appearance so that you are perceived as attractive and therefore valued. Making arguments that women have larger breasts as an evolutionary trait because of men wanting to procreate with them is an extension of that sentiment. Whether it’s true or not and to what degree - it doesn’t matter, it doesn’t fit into the conversation and it completely detracts from the point of women being hyper sexualized in today’s culture.
I support you if your say you’re egalitarian or feminist or what have you, but please consider the different perspectives and examine your arguments within the wider context. We are more than just our biology lmao.