Superseding us in what way? The machine is already better at chess and Go, clearly not at classifying images[1], but the issue here is that the author argues that there is no such thing as a general intelligence. It's all situational.

On a separate note, does it even matter? Some people argue it's important so that we can put AI safe-guards in place, to protect mankind. But either:

A) Intelligence explosion won't happen and those safe-guards are not needed.

B) Intelligence explosion happens and the supersmart AI will easily find its way around feeble safe-guards put in place by the inferior humans.

While the end results are not the same; in either case the safe-guards are useless, though Asimov sure made a good story about them.

[1] https://arxiv.org/abs/1710.08864