Sorry, I replied to you because I thought you were asking how it affected the final product, and I clarified, in case you had missed it, that it was about the quality of the tests as documentation.
Sorry this whole thing seems to upset you so much. Chill!
The quality of the tests.
If we go by the article, specifically their readability and quality as documentation.
It says nothing about the quality of the resulting software (though, presumably, this will also be indirectly affected).