I think this is a good description. What I missed from some other comments on HN that were complementary to the book is how personal it is. I think people who are already familiar with Oliver would enjoy it best.
Some sections were so specific to a certain type of guy, but phrased as if everyone will relate to it. I still liked it overall, but it really is for "productivity porn" strivers with a certain background. I mean, I go on HN, I'm familiar with GTD and pomodoro, I'm anxious about my own achievement, I kinda thought I was that guy. But after reading 4000 weeks, I could be like, ok, wow, uh, interesting things to chew on, but these are not really my problems.
(And I am still baffled by the idea that people would look down on you for having hobbies. Is this a British thing? Do I have to ascend a social sphere to get this? Because if I am chatting with some pals, let's say could be a few other engineers, miscellaneous office workers, various retail, service and trades, well... what is going to come up? bowling, maybe model kits, horror movies, booze? Are we going to discourse seriously about public affairs? Maybe someone thinks my motor controller firmware I worked on that day is cool, but I don't really want to talk about it)