In my (limited) experience and reading the concept of the 'kitsch' is widely associated with an aesthetics of deception and self-deception, as opposed to the 'camp' or 'passé' which contrast the bad taste of yesterday with the supreior refinement of the contemporary (however many minutes that may last...)
Leonard Cohen may be classified as kitsch in the sense that he is party to the mass production and diffusion of art, but who isn't these days? I have a suspicion that people maintain Cohen's later records are 'kitsch' because of the synths.
A quote from Dwight Macdonald might be approrpiate here: "Folk art grew from below [whereas] Mass Culture is imposed from above"
Ultimately the aesthetic category of kitsch is the vantage point of the consumer/objective 'other' observer of today- where even real art (such as the Mona Lisa) can be seen as 'kitsch'.
Hope that isn't too vague
or pretentious
regards,
CDB
P.S. (I owe some of my understanding of 'kitsch' to T. Adorno and M. Calinescu)