Notice the 'I believe' portion of the part of my post that you have quoted. The post is my opinion of the existence of a misconception that some folks may have about the D800. Indeed, the D800 coupled with proper technique learned from a great deal of hard work, may solve all or many of the technical problems that a photographer might have. However, the D800, IMO, will not solve all technical problems by itself, even though some folks may believe that it will. It is not unreasonable to believe that some folks may think that the D800 is going to solve all their technical problems all by itself, without any input from themselves, IMO. I believe that Nikon tried very hard to convince those with this false belief about the D800 that THEY are going to have to get involved in finding the solutions to their technical problems. This, I believe was a fundamental reason for providing customers with the 'Technical Guide'.
Using some of the 'lessons' in the 'Guide', I have already seen improvements in my D700 photography from the technical standpoint. I just thought I might as well regain some of the technique I used to use with film. Apparently, I have been somewhat 'sloppy' with digital. Don't know, maybe I thought digital would 'automatically' solve my technical problems....imagine that! Guess I was wrong though. Guess I need to have input in solving my technical photographic problems.
This improvement that I have seen in my D700 photography begs the question, 'Do I need the D800 at all?' Wow, I sure hope that all my 'technical problems' don't just boil down to sloppy technique on my part! That would mean that I wasted $3300 on a camera that I DID NOT NEED!
Seriously, I encourage all fellow Nikonians to try out the suggestions in the 'Technical Guide' with their current camera. Sure improved my D700 images! Also, it is giving me great practice (technique-wise) for my D800E yet to come.