I noticed a similar trait at Burger King once. Black customers could be counted on the leave their table unbussed while whites returned their trays and dumped their litter into the trash receptacles. Blacks have a corner on the “let someone else do it” market while bitching at how they’re perceived.
At the McDonald’s in McLean, Va., there are condiments galore, soda machine for free refills, napkins, knives, forks, spoons, etc. At a McDonald’s in a black neighborhood in Baltimore, nothing. Not even salt and pepper or napkins were out where people could get at them.
My mother noted fifty years ago that black women in a ladies’ room would pull ten paper towels out of the dispenser.
I think it has something do with reparations.