I had an interesting thought....
What if Carnival is trying to move us more towards a fast food menu (burgers, tenders/fries, burritos, pizza etc...) and away from the now diminishing the MDR through quality?
Fast food is cheaper, easier, less staff needed to prepare and serve.
Even Italian food is a long hold food that freezes well. It's Italian fast food.
If everyone ate primarily fast (frozen) food, the entire menu cost per person would drop significantly