The point of this article is that one of the problems with Vista and now Windows 7 is that people were so used to the XP way of doing things, even if the XP way was stupid or unintuitive. If you take some time to learn the new UI it's a lot better. Same with Office 2007, the old Office menu system was horrible unless you knew exactly where everything was, whereas with the Ribbon/Fluent UI most of the time it adapts for the specific features you are currently using.

XPification is a stupid analogy because XP was just a paint-job on 2k to make it palatable for non-business users. Most of the people who "like" XP are just too used to it; XP was the longest running consumer version of Windows (skipping Server 2k3) and probably the first consumer version that wasn't horribly crash-prone. A few are annoyed at the increased resource usage but don't realize how much hardware specs have increased in the 5 years between XP and Vista; using the Moore's Law rule of thumb specs should have increased by over 8x so it makes sense that it uses more resources as appropriate.