Amazing that we can get such high quality resources for free. That said, I'm not convinced by the example where the CEO uses the "data modelling layer" (essentially what holistics offers to build for you and what this book is an ad for). In my experience a good data analyst does far more than "translate" the business question to SQL. The exec's understanding is not only limited by not knowing SQL, but also by potential confounds or a billion other things that can make a seemingly meaningful result meaningless or dangerous.
I don't think simpler technology can give people the magic answers and easy data access that they crave any more than no code tools can let people build complicated correct systems