Honestly, although fast food is normalised in America, there are lots of people that would never be seen dead, chomping into an American burger with fluorescent beverage, to consider it 'food'. Do they even have vegetables in these places?
Also, cooking is not what some Americans do, whereas some people outside America cook from scratch every day. These visitors need to know dining options, which can mean eating out or finding somewhere with ingredients that are not overly American.
America developed differently to the rest of the world regarding food, an app is needed to help tourists find something vaguely edible rather than utterly soul destroying.
When I travel abroad, I am usually shocked how good food are compare to how much it cost, especially in Asian Countries. European countries, I get shocked at both good food quality and price haha
So all that artificial food is off the menu, yet Americans consider this stuff to be food. Nothing in any of those fast food places is food to anyone from the old world, unless they are under five.
Hence an 'actual food map' would be useful, not least to people not from the U.S. and wanting more than this nonsense Americans call 'food'. In short, a cheap burger is of no use to my nutritional needs and is neither 'food' nor 'cheap', just a waste of money on a non-food item.