not just the oversize carry on but the number of items they are bringing on a plane.
their big carry on. then their secondary (which is supposed to be a handbag etc) then an extra bag from duty free and the donuts you mentioned on top of that.
most of what people use as carry on now would never fit into the steel box at the check in. but as you say nothing is done about it.
would you like some peanuts sir ?