Allow me clarify, I think people in general consume more calories than they did in the past. They are just 'wasting' less food.

Most people when buying food budget money, not calories. So if food producers shave off a few ounces over time you won't notice because you already buy a surplus of food to begin with. The surplus just shrinks ever so slightly on the consumers end. That unused 2 ounces at the bottom of the mayo jar is now 1. That pack of fruit snacks has 1 less in the pouch, etc.

It usually takes a dramatic sudden change for most consumers to notice "shrinkflation".

I have noticed that when somebody says "so you are saying/suggesting X," X was never actually said/suggested. A frustrating thing to encounter in a discussion. Sorry if I was unclear.