Simple Food is Waters' attempt at a home cooking primer, and boy, does she think we're dunces. One particularly amusing example: "Butter is used for sauces, frying, finishing vegetables, baking -- and sometimes just to spread on a piece of bread."
You don't say.
Or this: "A picnic is a great way to change the routine and get outdoors to your neighborhood park, or the woods, or the beach."
Many Americans do, indeed, eat very poorly. But that doesn't mean they're stupid.