Anyone, at any stage of their QA career, indeed anyone that works with testers, should find something usable within this book.
While the book advocates for the context-driven software testing school it's not dogmatic E.G.,The whole point of context is there are no universal best practices no edicts on correct tool choice, languages or SLDC to follow which , unlike most decade old books on IT practices appears to have aged well.
Sadly that's not the world the C-level people usually are exposed to at trade shows, sales presentations or ads on their way through Forbes that suggest that testing looks like _____ . E.G., we read a book about how Google does it ergo that's what a start-up should do. E.G., Cargo Cult Testing of which this book is a great step towards combating, or at least having you realize you don't want to fight the company and go test for others.
The book is easily digestible, chapters with lessons learned on a topic. I.E., Working with developers, creating successful tests, how much testing is enough, etc. While you won't learn testing from this book , ok you could if you read all the supporting referenced books, your current practice should improve as a result of it.