Yeah, if anyone knows of a good, coherent, well written Vulkan book that properly explains things instead of just enumerating API specifics (or if this is that book), I'm keen to hear of it.
I completed the 5 chapters and recently started the "GPU Driven Rendering" section after chapter 5. I've found vkguide.dev far more interesting than the book mentioned in the article, at least for my graphics experience level.