It's easily extendable to the animal world as well. Is a nest created by a bird or a den created by one of various mammals natural or artificial? Is a nest made by mice in my garage from synthetic fabrics, flexible plastics, and whatever plant matter it can find natural or synthetic?
My wife was recently asked to make a meal for someone who didn't eat "processed" foods. What level of manipulation needs to happen before a food is "processed"? Can beans or rice be dried and put in a bag? Can chicken broth be used if it's homemade, but the chicken came from a commercial farm? Or is extracting broth from a chicken processing it?
I've increasingly noticed many sub-cultures adopting odd definitions and interpretations of commonly used language with the expectation that everyone who interacts with their group understand their dialects. It's not really jargon or vernacular since the words are common to the language, just used to mean something different than the general population would understand. Similarly, artificial is now assumed to mean bad and natural good, when neither ascribe value by definition or in practice.