Much of the book's copy appears to have been written by AI (despite the foreword statement that none of it was), which explains the hokey overenthusiasm and exaggerations.
As we know AI is at least as smart as the average human. It knows the Zeitgeist and thus adds “No AI used” in order to boost “credibility”. :) (“credibility” since AI is at least as smart the average human, for us in the know.)