Holy shit, I read the article and assumed I heard of the term before since I kinda of remembered the definition, but I didn't make the connection. I'm not sure how to feel about that it has turned into a term AI people actually use.
The terms concept drift and (to a lesser extent) context drift have been used in AI for decades. The NannyML article uses the term concept drift. Here [1] is a 1996 paper that uses both terms.
