Food motivation isn’t merely “does it want food”, it is more “will it do a complex action for food”. My GSD will spin, sit, stay, speak, shake hands, play dead and do a whole host of back to back commands for a tennis ball, but do maybe half a command for a standard treat. The GSD would not be considered to be very food motivated unless a “high value treat” like a hot dog is being offered.

Even in a mostly smooth walnut brain, there exists a genetically diverse hierarchy of desires. My dog was the runt of the litter, a different puppy was the glutton that ate every scrap in 10 seconds.