We may be unable to provide a concrete definition of what intelligence is, but we can certainly provide definitions for what it isn't. E.g. we don't need a concrete definition of intelligence to say that a rock isn't intelligent. A pencil isn't intelligent. A calculator isn't intelligence
I don't disagree for the items you listed, but for something that exhibits what in many aspects can AT LEAST be mistaken for 'intelligence' (among signs of the complete opposite, of course), I would just say that there is no way for anyone to know.
