Words must have concrete definitions, to have meaning. If I'm at a restaurant and I order chili and they bring me a ham sandwich, I'm going to be confused, and likely angry.
That's an extreme example, of course, and I understand that our language evolves. But the fact that "irregardless"-- a nonexistent word that if it did exist would actually mean the opposite of how it is incorrectly used-- is now in the dictionary, is a problem.
Specificity and consistency of language breeds clarity of communication.
Imprecise and inconsistent language results in miscommunication, confusion, mistakes, and potentially anger and sadness.
This applies to the names of foods, as well as anything else in general communication.
