I read this book cover to cover.
Two things about it.
1. Much of the stuff they crticize is just because they have configured it wrongly (espcially when they slag off sendmail).
2. To hate something this much, you have to secretly like it.
It smacked of someone visting the Wild West attraction at DisneyLand and saying "I've seen first hand accounts of the real Wild West and none of them are as good as this ... "