Yes, but only for people that don’t already have an audience.

If Famous Athlete/Entrepreneur writes a self-help type book, people will buy it, because the fame lends legitimacy. Even if the book itself is obviously written by AI.

With an additional caveat: the person needs to have some real, demonstrable authority. Tim Ferris doesn’t really have authority in the sense of “I am a professional athlete” or “I am billionaire startup founder” does. He does have authority as a podcaster and digital products / books creator, but that isn’t what the 4HWW is about.