It makes sense if your definition of "Intelligence" is "things only humans can do." In which case the set of all things only humans do shrinks but never goes t

It makes sense if your definition of "Intelligence" is "things only humans can do." In which case the set of all things only humans do shrinks but never goes to zero and thus you can always maintain some kind of superiority. IMO that's how people use the term - whether they are experts or not.