I don't particularly care about shrinkflation. It gets calculated in the CPI (obviously) and most of the time it's goods that are unhealthy and overpriced to begin with.
Sure, most of these items also cost next to nothing to make too and costs to actually make have barely risen (as a percentage of the item cost). So mostly it’s companies using inflation to squeeze more money out of people.
I agree that material cost is not a major component of the cost in a lot of these products.
It's marketing, distribution, etc. I don't think inflation is their excuse to squeeze more money out of you as it is to spend more in other areas of the business, as they should.
I think it's just a wild theory at this stage, but some doctors are saying that eating unhealthy food leads to diabetes, heart disease and high blood pressure