Like so many anti-QANTAS types that frequent this fourm if you are in the business of prejudicial reinforcement then this book could be considered a good read.
Timed perfectly to take advantage of Christmas, it was guaranteed sales when purchased as gifts for family members that work for QANTAS. I suspect that will prop up the sales figures. The author probably knew he could get a few thousand sales from that alone.
I can safely predict that it isn't going to be receiving any accolades for hard-hitting investigative journalism.