They did so because the eateries were given privileged access to the wealthy New Yorkers who had been given the card free.
A regular user with privileged access may sometimes violate the need and misuse the privileges as well.
You still need a way to enforce a low-privileged access policy on inbound messages, and that is usually through MCAUSER.
They respond anecdotally from a position of superiority, confident with their privileged access to information, their influence on policy and their status in society.
