People mock the vegans (or their twins, the carnivores), but they've clearly caught on to the Excessive Surplus Problem and are finding ways to deal with the glut of food, by being more exacting in what they eat.
I sort of do the same, by reintroducing the fasting calendar. We keep doubling-down on it, but I think it's just our way of reducing our choices in What To Eat Today down to a smaller and smaller set of options.
As in, "Today is Friday. On Fridays, I eat fish. Perhaps I should also eat fish on Wednesdays, like in the bygone era. And roast only on Sundays..."