As on old Second Waver, I rather like the term "ingrates."
Im happy to accept any cut up credit cards, closed bank account statements, job resignation letters, surrendered mortgages or car loans, notices of academic withdrawal, surrendered university degrees, returned birth control prescriptions, returned divorce payments, returned pension accounts, returned child support payments, and cancellation notices at DV refuges and rape crisis centres any Pomo-Addled Handmaidens care to hand over, given their utter disgust for Second Wave feminism (or rather, what they've been told about the Second Wave, since none of them have actually read the original source material many have suggested be banned.)
Quislings is also good, though so few know any history, they won't know who Quisling was.
Collaborationists is good, esp, given that postmodernism has some roots in apologia for intellectual collaboration with the Nazis.