Mark Twain says it best, and while this quote pertains to cigars this mindset is equally relevant to beer.
"As concerns tobacco, there are many superstitions. And the chiefest is this--that there is a STANDARD governing the matter,
whereas there is nothing of the kind. Each man's own preference is the only standard for him, the only one which he can accept,
the only one which can command him. A congress of all the tobacco-lovers in the world could not elect a standard which
would be binding upon you or me, or would even much influence us.
The next superstition is that a man has a standard of his own. He hasn't. He thinks he has, but he hasn't. He thinks he can
tell what he regards as a good cigar from what he regards as a bad one--but he can't. He goes by the brand, yet imagines he goes
by the flavor. One may palm off the worst counterfeit upon him; if it bears his brand he will smoke it contentedly and never suspect."
And I have experienced this superstition first hand, both with cigars and with beer. "We" once tried to teach a lesson in a homebrew club. We passed off draft Budweiser as a craft Pilsner. Everyone LOVED it, "could take best of show in a competition" they said, even certified judges. Society on the whole is inexplicably biased by what they "know". Even when they don't know anything.
Like with children' Give them something to eat without telling them what is in it and more often them not they will eat it, and love it. But tell them it has some obscure ingredient before hand and they'll insist it makes them sick.