Doubtful. The amount of sodium in processed food products and restaurant food is absurdly high. Which population groups have sodium deficiencies? certainly none in the 1st world, and probably none in the 2nd & 3rd world.
My suggestion of some groups already having deficiency is conjecture based on little hints here and there; more study is needed. My guesses would be: vegetarians, athletes who avoid processed food, ethnicities with a longer history of eating heavily-salted foods, some elderly, some pregnant women.
I suppose that by subjecting the entire population to an enforced low-sodium diet, and seeing who starts suffering from fatigue and early mortality, we'll find out soon enough.
But it seems to have some effect, and eating some more salt is also recommended for people with too low blood pressure.
or, per food product: anything that has more than 1.5x as much sodium as it does calories
Unit mismatch? Do you assume mols of sodium?
Are cheetos a very `light' snack? I just took some "Hula Hoops" out of our vending machine and that 34g pack had almost 1000 times the number of calories you report. The "Hula Hoops" have 727 kJ / 174 kcal and 0.3g Sodium, and they also report a "salt equivalent" of 0.8g.