Agreed. The correct text color is the one of the titles. The paragraphs are too gray, they have not enough contrast. Place a sheet of paper from a book or a magazine side to side with that page and the text on the paper will be much easier to read 99.99% of the times. Is there any irony in that? Given the subject of the post, maybe not. It's a demonstration that hundreds of years of paper typography yield a better ergonomy than 30 years of the web.