Boxes of Kellogg's cereals including Froot Loops, Cocoa Krispies and Raisin Bran are seen at a store in Arlington, Virginia, December 1, 2016
  • Kellogg's is advertising cereal for dinner as an alternative for people struggling with food prices.
  • But people aren't impressed with WK Kellogg CEO Gary Pilnick's comments.
  • Social-media users say cereal is no longer cheap anyway, and likened Pilnick's remarks to "let them eat cake."

Kellogg's is advertising cereal as an affordable dinner for people struggling with the rising cost of food — but some consumers aren't happy with the cereal maker's approach.