My impression is, there's no real "hard" substance behind EY, and he doesn't even try to achieve that, being satisfied with being "influental" even as is.
I don't think that's a hit on it's own, but without someone like a Ng/LeCun/Bengio the organization lacks a critical link with reality.
Does the CEO of a software company have to know how to code? Does it matter? Maybe the CTO should - maybe - but the CEO?