Are you aware that human history is full of examples of sexist, patriarchal societies where women were discriminated against? I'm sure you are, as a reader of The Mary Sue. I'm pretty sure you are as a person alive in the 21st
Century, too. Yet so many of the historically inspired fantasy worlds we love are remarkably intent on reminding us of this.
When I raise this issue with someone, I often get some variation of this
in reply. Sexism in (to pick the most obvious example) medieval fantasy is okay or even desirable, the thinking goes, because in the real European Middle Ages sexism was the status quo. There's no denying that, but fantasy is called fantasy because it's a fantasy. There were no dragons in the real Middle Ages either, but we don't have a problem including them.