> Examples are the best documentation ...

No they are not, as examples lack explanation of the concepts underlying a programming language's definition.

> ... and we now have a machine to produce infinite examples tailored specifically to any situation

This is like saying, "to learn X language, just read a bunch of source in GitHub repositories that use it."

What books written by authoritative people provide, such as language designers or recognized luminaries, is conveyance of key linguistic concepts and an explanation of "the why" they are important. This is the sole purvey of people.