What folks like to eat/drink, what they can afford to eat/drink, and how they prepare it is their business.
Can't hate them for taking the edge off of cheap bitter coffee with a little salt.
I'm thinking mostly of some folks I know who lived through the depression-era....they developed a taste for things such as lightly salted coffee or tea , sour milk curds, gruel, smashed potatoes and hot milk, bread and milk, cornmeal mush, lard sandwiches, etc.