Well, in that case it makes it even more amusing. They are paying to get the ability to post a story, but aren't even following it. It would be one thing if they posted some sort of rebuttal, but posting a "best practice" style thing in obvious violation of it is rather amusing. (Granted, it is not a criticism of the article.)

I do think there is still more handwaving in the article than I'd care for. In very few cases was it a small change in font that made a difference. And, even then, it is still artistic in nature. Pretty things make people more trusting and happy. Some fonts are prettier than others.