The societal view of women throws out infertile women/trans women/and other groups as being functionally non existent. Of course in reality these groups are very real but by much of the mechanisms in patriarchal society, they might as well not be. Patriarchy values the woman as the mother and the baby maker first and foremost, and those women who could not fulfill this role are tossed to the side. Acknowledging this doesn't fall into gender essentialism, but rather critiques gender essentialist ideas.