Postmodern quotation blocks demystification because all materials are equally degraded

Evidence

What must be excluded, however, is anything like a process of demystification at work in this particular videotext: all its materials are degraded in that sense, Beethoven no less than disco. And although, as we will shortly make clear, there is a very complex interaction at work here between various levels and components of the text, or various languages (image versus sound, music versus dialogue), the political use of one of these levels against another (as in Godard), the attempt somehow to purify the image by setting it off against the written or spoken, is here no longer on the agenda, if it is even still conceivable. — Fredric Jameson, Postmodernism, or, The Cultural Logic…, 233

Categorization

• XREF: Directly sets up the parody/pastiche distinction by showing why the levelling of high and low culture removes the critical edge Godard’s montage once had. — connects to: Period settings become style quotations rather than lived worlds once fully aestheticized — Mark Fisher, Ghosts of My Life: Writings on…, 170
• QUESTION: If all materials are equally degraded, could any critical demystification survive in postmodern culture at all, or only outside it? This bears on whether the ‘cultural dominant’ thesis is falsifiable.