That is an absolutely terrible standard. In fact, that's technically not even a standard. The "I know it when I see it" measure is literally the logic used in censorship. It allows cognitive biases to seep in with no check. A lack of hard metrics means that there' zero ways there can be any objective consistency. And finally, this kind of rationale makes the biggest sin that I can think of, "non-falsifiability".
Whatever people's opinion on AI are or are not. This logic should wholly be rejected in every instance it is brought forth. It is literally the antithesis of rational thought.