I feel odd dissing this article, because there's nothing wrong with it: Saying that you should consider your audience, focus on your content, and use "rich" (oh man, I remember when RIA was the buzz-de-jour) websites when, and only when, appropriate, is not controversial.

That said, I don't feel like there's much actually said. Just restating what is commonly advised (if not practiced) best practices, and not really doing anything to address WHY it isn't practiced. It also failed to mention the differences when you have an application that DOES benefit from being "rich", how progressive enhancement is still a good theory (I'll be honest, none of my workplaces have DONE it).

I've seen plenty of dismissive "web coders are trash" and "lol, Js, learn to code" comments (paraphrasing) in various discussions, as well as more informed discussions as to what is and is not a real cost/benefit of various approaches, but I've not seen much in-depth discussion about why the best practices really are rare, and how to fix that. I wish the author had gone beyond the basics and addressed that.