It’s a brave new world indeed we live in… where non-traditional gender identities are so thoroughly woven into the fabric of daily life that it apparently requires great imagination to depict a culture that doesn’t ask what gender you identify as. 
You do say a few posts later that
But you think it’s not an imaginatively engaging project? Seriously, you should play Sea Eternal beyond the intro. As others mentioned, it’s not anachronistic; it’s put some thought into how a society would work when a range of gender identities is actually taken for granted; it has a fleshed-out character who deals with gender dysphoria and transition; and it uses a human weighing the irreversible choice to become a mermaid (and vice versa) to echo some of the issues that trans people face in the real 21st century. It’s done its research and thought through its themes.
As with Affairs of the Court, there’s room for debate over whether Sea Eternal is successful… but when I see people writing it off as unambitious or unimaginative, I think they’re closing their eyes to what’s clearly there.
Compared to some readers, I also find it easier to accept that gender relations in a fantasy culture could be different without needing a huge amount of comment, detail or justification. As I suggested a couple years ago, an Afghan villager reading a CoG set in any contemporary Western city would constantly be wondering how any society could be so cavalier about gender and how little people’s experiences varied on the basis of sex. While on the other side of the coin,
Edit: And while I’m digging up sort of relevant old posts, here’s one where I talk about how critics of anachronism in speculative and fantasy fiction tend to be more selective than they think they are.
Anyway. I’ve been on the road, but catching up with the thread with my mod hat on:
Please don’t describe fellow forum members’ identities as “obviously incoherent.” CoG discourages subtle-isms when it comes to gender, let alone being outright dismissive of people’s gender and telling people what their gender is/isn’t.
(And that’s not just CoG being on the side of the SJWs when it comes to gender, Dom. If we’re going to do our bit to reduce the political atomization of the Western world, one part of that is not being too quick to wield the "obvious"es and "of course"s against people we disagree with. If you talk as if people’s views are worth only scorn, it shouldn’t be surprising when they walk away, or reply with reciprocal "obvious"es.)
Please don’t refer, even obliquely, to fellow forum members as “scum” or any derivations thereof.
As a mod, I point out that spitting on people is against the forum rules. If I’ve somehow missed my friends spitting at people, I belatedly flag them and tell them to cut that shit out. 