Clearly the article is just a thinly veiled advertisement, but leaving that aside: Apparently the author hasn't really read the agile manifesto, because nowher

Clearly the article is just a thinly veiled advertisement, but leaving that aside: Apparently the author hasn't really read the agile manifesto, because nowhere does it talk about scrum or sprints or xp or any of those things. The agile manifesto is essentially a few sentences, that very eloquently say "Don't be a dick and understand that the product people or customers don't really know what it's supposed to do either." Much like the bible took Jesus's essential point "Don't be a dick." and wrapped a terrible mess of a system around it, the various agile methodologies have done the same, but the essential point of the manifesto is as relevant today as it was when it was invented. (Note: I'm not actually religious, the Jesus thing was just a comparison)