I think what OP means to some extent is that the Korean media, while often showing "fantasy worlds", also rarely injects this with a pretense of authenticity as Western media nearly constantly does.

It's easier to articulate in pop music, where a large chunk of popular pop songs is written, composed and demo-tape'd/vocal-guide'd by the same dozen or so of Scandinavan service companies, for both Western and Korean pop artists equally. But while the Western pop stars may act as if they're the auteurs of "their music" rather than being entertainers who were given a piece of music to sing as part of a carefully crafted product vision, in Korea, this is relatively above-board and neither talent nor consumers pretend otherwise.

Don't get me wrong, the Korean pop music industry is terrible in many other ways (as is the pop industry in general), but there's something to be said for content not trying to fool you about what it is.