Well, I finished it. The covert sexism faded into background noise (these women are UNATTRACTIVE and that is FUNNY, get it?). So I was somehow surprised by the sudden appearance of South-Africa-in-the-90s inspired racism near the end. Also, the author, per his note, apparently thinks breaking genre rules in boring ways is the same as satirizing a genre. Lol, no.
But hey. I finished it.