I like the author mentioning he has no need of video and photo editing/management among other things, as the reason he switched from OS X to a pure Linux setup for his Powerbook.
Makes me wonder if he has a life? I mean at this day and age if video and photo management isn't part of your digital life (add the proliferation of mobile devices with photo and video capabilities) then you should seriously consider having one. If I have to prioritize the data on my hard drive, those home made videos and every day photos certainly is on the top of the list.
Anyway, the article is not an "effective way" to advocate the linux desktop to a mass audience. In fairness, it didn't claim to be one.