It felt that the insights were coming from Google's unique vantage point - i.e. their domination over search. I believe that there are many areas in which a company like Google can add great insights to the world (e.g. how to build a great company from scratch) and that when they share them, it ought to feel like "only Google could have come up with this".
If I read a book from someone senior at say Apple about best practices for managing a global supply-chain - then I'd be very curious to understand their unique point of view.
So my first comment about this being "disappointing" is coming more from that angle - Are these insights only Google can give? I am not sure (although it doesn't invalidate the insights themselves). Now, my second comment that I found them shallow, could be because like you say "I already get it" (although frankly, I don't think so - I feel that I don't get this stuff :) I am just always super curious to learn stuff from Google et al).