I chose to stop reading after the first example document with tasteful light gray text on delicate light gray background
https://d31td5fkd89rr1.cloudfront.net/assets/images/blog/des...
It's only the lower part of the image that's of interest as an example; to use low contrast on the (mostly irrelevant) upper part of the image makes it easier to focus on the part that's discussed in the text. IMHO.
Also the actual first image bothers me in a similar way: the colors seem to blend into the background.
I concede it might not be a very valid reason to give up on the article but since it seems to be an ad for a set of products I find it fitting to judge it on appearance.