It's a fascinating question. I took the GPP as "media literacy" as more of an elite culture shibboleth. Making the right references in this sort of elitist signalling process is more about showing alignment to your contemporaries. It is just as much making the right references and omitting other references.

Being an LLM that "knows a bit of everything" doesn't necessarily give you access to know the audience expectations in this sort of environment. They are layers of fashion and social context which almost intrinsically embodied as a fringe of temporal currency and connection, not necessarily available in any training corpus.

An LLM could be stuck in some imposter/savant moat here, always making last year's references or possibly over or under selling the current expectation.