Briefly:
Your question is my point. They don't know Cohen. They do know a number of the key players in the film... a phenomenon of appreciation by association. Willing to look further since . . . likes/loves him.Re: Lizzy's comments about it was geared towards a younger audience, I have to ask, how many "young" people even know who he is.
Geared to attract the younger person, via the others... and once arrived at the destination of "Cohen," to actually 'like' the presentation [think MTV] and then investigate this Cohen guy further, where the "Where's the beef?" question will be answered in spades. Mixed metaphor... will be answered Prime.
~ Lizzy