Considering that pH plays a major role in teeth health and acid-reflux, two things that a significant portion of the population suffers from and can dramatically reduce quality of life, shouldn’t the pH of a food item be just as important as nutritional values?
Acid Reflux (GERD) is isn’t really caused by acidic foods, but by irritation of the esophagus and a weakened esophagal sphincter. Food that irritates your throat, or fatty food that leaves the sphincter open longer cause GERD, it has nothing to do with acid reaching your stomach.
And that makes a lot of sense really: your stomach has a PH of around 1.5 to 2 before eating, and 3-ish after a meal. Unless you’re straight up drinking a glass of lemon juice, you’re not going to make it any more acidic than it naturally is.