The intent of the book was to keep it at the macro level and very simple so people new to investing aren't scared off. There are some great golden nuggets in there for advanced investors so everyone has something to learn from it. Think about the actual title of the book - 'Be a Dividend Millionaire'. How many advanced investors don't already know about the power dividends have in a portfolio?
Rate the book on whether or not it met its purpose, and this book does. It is below my level of investing knowledge by a decade and a half, but I read and rated the book based on: intent, did it deliver, was it readable to the targeted level audience, was it informative, does it serve as a spring-board for additional research for newer investors? Answer on all was yes. Even if I had learned nothing or if I had not been reminded about some of the things that I neglect doing, the book is still a 5 star book.
The basic investing parts of the book that you do not like are critical to being successful in the world of investing. If you do not have a handle on your own expenses how much harder does that make it to accumulate wealth?
If I were you, I would suggest reading it again from a different perspective and then hand it off to someone that does not understand investing but wants to learn more.