If you have a clear definition, one that an informed reader could apply to some random product on their grocery store shelf to distinguish between "processed" (almost everything) and "ultra processed" (?), then you should post that definition.

Otherwise you're just playing the same game of Humpty Dumpty.

Immediately backing off to "I know it when I see it" really doesn't help your case that UPF is the right way to categorize unhealthy foods

Are Pringles in a can really that much more unhealthy for me than if I make the potato paste at home, fry them in oil at home, and toss them in lots of salts and seasonings at home?