Given that Norvig was one of the authors of "The Unreasonable
Effectiveness of Data"[1] and his famous statistical spell checker[2] are both about showing how rule and symbolic intelligence doesn't work I don't think your thesis is quite correct.
I think they referred to him internally which makes sense. I follow him on LinkedIn and most of the posts are about GCS AI services, which is external facing.
[1] https://static.googleusercontent.com/media/research.google.c...
[2] https://norvig.com/spell-correct.html