Bob Martin has built a career on asking the wrong questions. He is doing the same here as well.
But at the end of the day, he's a guy with a long career in programming, which makes him significantly better than the median, but it doesn't make him three sigma above.
In this case, he's got a pretty good short- to medium-term argument that if you have a robust testing and verification suite, AI code that passes it all is a terrific outcome.
I'm really not convinced about long-term. Possibly, AI ends up writing even better in the future and we never have to worry about human maintainability.
But it's also possible AI is at/near its limit, and we'll always need human maintainers. In which case, incomprehensible vibe coding might be a problem.