In pretty much every movie about the Army, the guy in charge of the commissary is portrayed as corrupt. I guess this is one case of reality copying the movies.
In every Service, the Pork Chops (Supply weenies) typically live much better than anyone else. Doesn’t matter in garrison/at home base/in port or in the field/deployed/at sea, the Supply knotheads get first choice of the best of everything...and usually take it.