Afraid, I completely disagree. How could you meaningfully "sum up" someone's lifetime's worth of work into a couple of pages and explain the related complexity? (Not talking about academic abstract-style summaries.) Prof. C is cited many thousands of times (did a quick look up on Google Scholar) in well-being and motivation studies. On the other hand, for Newport this is a "side hustle", because his primary work is supposed to be a "computer science professor".

Time will tell which book provides durable value.