The one star is not a reflection of the content of the book, which is clearly a very fine treatise on coding practices, but of the fact that the Kindle version is almost impossible to read. Code samples are truncated, in a variable-width font, and have less-than and greater-than symbols missing. References in the text often refer to listings that are not closely located with that text (eg. "see Listing 4-7 on page 71" is almost impossible to find on a Kindle without single-paging).
This is a book that requires a lot of page flipping, and shouldn't be available on the Kindle unless the publisher is willing to put in some effort to address these readability issues.