@dredmorbius@toot.cat@Sandra I'd not seen the blog post, it we probably crossed posts.
I agree with most of the criticisms. I'm familiar with the productivity genre, and a lot of it is highly self-serving and overwrought, for obvious reasons. (It resembles much other self-help lit, from diet to fitness to relationships to personal finance to ..., again because the truths are actually pretty simple, hard work is required. it's easy to write a book, it's hard to compete...)
That said, I recommend the read, even if it's a quick, skimming approach dipping in to specific details. I'm simply not aware of a better general guide. (I'm not fully versed on the genre, of course, beware reviews based on partial exposure).
From your own digest (pretty good BTW), two conspicuously missing items are a daily and weekly review and planning and digest session (chapter 8, also see my own #BOTI toots) and the tactic of time-blocking (chapter 4).
The book is short (260 pp), easy reading, it's largely defined a space, and even if only as a pointer for criticism and expansion or refinement is useful. And yeah, I'm something of a believer in the book form.