Couldn't agree more. This article would be 2/3rds right if this was 1995. But almost every thing in this article has been corrected for years and years.
I find it odd how people go on and on about how stuff isn't ready for prime time in Linux but I run the bleeding edge of the raw hide branch of Fedora on multiple computers doing different tasks and I never see the kinds of problems these people go on and on about. I run server farms with Redhat and stuff just works. The only time stuff doesn't just work on Linux is when Solaris admins go "Linux is Unix" and then try to run their Linux boxes like they are Solaris and screw them up.
I think it is very possible that with the right hardware someone might have your opinion, and with the wrong hardware someone might have the opinion expressed in the article, which would still imply that problems DO exist.
I am experienced enough to not be affected by many of those issues, but it is very obvious to me that XP seriously outperforms my Fedora.
And as far as I understand, Redhat is Server not Desktop, which is not really the points of the article.