Not the creator, but PoW has plenty of positive qualities. The fact that the distribution schedule is much more accelerated than the others, and doesn't rely on fees should make concerns about "energy waste" less pressing.
> having an "external driver" and the system being turing-complete are not mutually exclusive.
In many cases, they are. For instance, if you tack on an already-Turing-complete component to the existing "system", then it's disingenuous to call the existing system Turing complete.
Further, this "covenant"-style system isn't really what Turing had in mind when he spoke of an "automatic machine".
Further further, this has nothing to do with Craig Wright, who famously called Script itself Turing complete in a plagiarized paper, and said that the "alt stack" is critical for it to be Turing complete.