Hello Caesar,
Maybe a little context on the original drive to write that paper would help...simply, only a few years ago it was very difficult to take, analyze and manipulate. Then REW arrives and you have this tool that's relatively simple to get going and gives you now TONS of options. In terms of measurements, most people are acclimated to manufacture's speaker test data. Those have little correlation to 'speaker in room' measurements and absolutely don't give you any clue as to why your REW measurements are not nice and flat like the speaker measurements. The paper's intent is to guide a crazed audio lover through how to use freq smoothing above and below the transition zone (~ 250Hz), how to gain value from ETC graphs, how to evaluate single speaker deviations in freq and decay and how to compare Left to Right speakers in both freq and decay.
I do understand how the paper can get lofty and quickly, but if you do take REW (or ARTA, etc...) acoustical measurements in your room at your listening position, using the paper and the checklist can give you a process to evaluate your situation.