Most of what you are saying is correct, but I feel the need to respond to your far too many repeated assertions that "People do not eat tart cherries directly": Except for when they do!

I grow several varieties of sour cherries in my yard, and frequently use them whole and without further processing. Usually I use them in a recipe like this: https://en.wikipedia.org/wiki/Clafoutis. Sometimes I pit them first, sometimes I don't. Sometimes I'll even happily snack on them raw.

No, like most small fruit you aren't going eat them because you are desperate for calories. But they actually aren't any harder to prepare or use than lots of other tasty things that people traditionally grow.