In any the actual wording, it is not a design guide for untrained individuals. It is certainly in its purview to contain some design requirements.
My problem with it is when it addresses issues beyond the wiring system outlet.
Not what it says. it says it is not intended as a design guide
OR an instruction manual for untrained persons. I personally think it ridiculous when the response to unnecessarilly ambiguous language being added to the NEC is: "Oh, it's not a guide for untrained persons," when trained persons such as electricians, inspectors, engineers, find the language to be problematic. Not that this is what you are saying but I have heard some folks who sit on committees say this.
"It's own binding" was just a figure to say it is its own book, covering something different than say, gas, and thus can be expected to need to be different.
Regarding writing of books, IAEI makes a definitions index and has many representatives on the panels, many committee members sell training, and I predict that with this change to the definitions section that someone will make a booklet of definitions that is organized differently for ease of use.
The NFPA encourages people to subscribe to its NFPAlink service to make its now more difficult to read standards easier to read (racket).
Even Mike Holt has commented on how it's getting harder to interpret the code. It's not just because things are becoming more technical. It's also due to a lot of needless revisions that just make for confusion.