Many marketers and millions of consumers are aware that there ain't no Haagen, there ain't no Dazs and the popular brand of ice cream is nothing but a lie.
Does it matter?
Two made up words, a product that has nothing whatever to do with Scandinavia and gleaming stainless steel factories pumping the stuff out by the ton--it doesn't change the fact that we're more likely to pay extra for a Haagen Dazs than we would for the identical product from Hood or Sealtest.
And knowing doesn't really seem to matter. Knowing that there's no truthful difference appears to be irrelevant. I think that's because there's a non-rational, even emotional part of our brain that yearns for the story.