I agree that the book is full of examples of infographics and humour.
It's also full of typos, spelling mistakes, syntax and expression problems, and editing errors making it difficult to read. The layout and presentation of the information was also frustrating - which is ironic considering the subject matter.
I don't blame the author Joel Katz. Him and his team of collaborators are clearly experts in the topic (although, I think they rushed the production of this book).
The fault lies entirely with the publisher Wiley and the editorial team. As a lay person, I constantly spotted errors, which makes you distrust the information and makes it all the more difficult to read.
I've come across much better reference books for visual information design, completed to a higher standard, that are much easier to use and clearer.
This is a good book if your only intention is to skim through the pages.