Jameson, that is.
This is from “Marxism and Postmodernism,” 3rd essay in The Cultural Turn (1998):

[Mike] Featherstone [in Postmodernism/Jameson/Critique] thinks that ‘postmodernism’ on my use is a specifically cultural category: it is not, and was rather for better and for worse designed to name a ‘mode of production’ in which cultural production finds a specific functional place, and whose symptomatology is in my work mainly drawn from culture (this is no doubt the source of the confusion [!]). (44-45)

Gotcha. Postmodernism isn’t a cultural category, but its symptoms, at least in your work, are found in culture. But where else can symptoms be found?

Something is lost when an emphasis on power and domination tends to obliterate the displacement, which made up the originality of Marxism, towards the economic system, the structure of the mode of production, and exploitation as such. Once again, matters of power and domination are articulated on a different level from those systemic ones, and no advances are gained by staging the complementary analyses as an irreconcilable opposition, unless the motive is to produce a new ideology (in the tradition, it bears the time-honoured name of anarchism), in which case other kinds of lines are drawn and one argues the matter differently.

Yeah. FTW. This is one of the many reasons I’ve become fed up with the field of queer theory this decade (not that I know much about it). Of course, adherents would say that they are producing a new ideology. But can somebody please tell me how “destabilizing the gender binary” or whatever they’re calling it these days can do anything but fit snugly into the cultural logic of late capitalism?