There is no need for highly salted or preserved foods, other than to package them up and let them sit on a shelf.
It is a common feature of the diets of obese Americans of whatever population group to rely upon highly salted packaged foods, and there is no need for it, and it is, contrary to the authors suggestion, MORE expensive.
when the power goes off? Here in about 4 years, you are going to have to deal with rolling blackouts.