Keep in mind guys this part of a series that a publisher puts out that is aimed at quick recipes to get a beginner started as you might guess the name implies "Instantly". So he is delivering what he was paid for.
There is one for revit also.
A comprehensive book would take a author probably 2 years or more and would have to put other consulting, etc... priorities aside that generate income.
I am guessing the author would love to write a book with much more content if someone was willing to pay what he normally would earn from consulting for 2 years. If it were a area in technology that had bigger group of developers then publisher could justify the expense, but sadly this is probably not one of them.