Well, as an author it's always a disappointment when the reader doesn't understand the purpose of the article, so when I read such remarks I go back to the material to review whether I missed saying something important, but in this instance I think not, as I believe the point of it is explained rather clearly in the paragraph between Figures 1 and 2:
"However, just in case printers don’t perform as accurately reproducing more highly saturated colours, or much lighter pastel colours than found in the GMCC, I thought it worth considering whether I should move beyond the GMCC for a more comprehensive accuracy test covering (i) the more saturated colours that gloss and luster papers using Photo Black ink in today’s inkjet printers (Figure 2) are capable of printing and (ii) the challenge of accurately reproducing delicate pastel colours."
I hope that's clear enough, but that's also up to the minds of the readers.
These articles go through two stages of review by knowledgeable 3rd parties before they get published - the first stage by my reviewers, and the second stage by the publisher.
As the decision whether or not to publish any material on this website is at the sole discretion of the publisher, Kevin can speak to the broader question as to whether LuLa is an appropriate place for this item. The fact that he published it probably answers that question. The day he tells me a piece is beyond the scope of LuLa's intended coverage, well it just won't be published here. I think if you read through various threads particularly in the colour management and printing Sections in this Forum you will see that LuLa's audience is very broad, including people who range from the "non-techy" to the highly sophisticated technologists, in some cases with many years of formal education and deep experience in this field. So it's normal that some people will just gloss over all this stuff while others will read it and possibly find it of interest.
My main interest in putting this stuff out there is to share research I'm doing, see whether it resonates, see whether it's of any benefit to others and to receive advice.
Well, what more to say - your view is pretty clear! Thanks for taking the trouble to write in.