Reason 5 is okay. I got such good deals on PC games in the last days, but console games also get insanely cheap after a short while. The difference is there but not so big.
Reason 4 is flawed. 1. I don't want to play The Sims 3 at all. 2. It is possible to play games with keyboard + mouse on the PS3. MS could release their own keyboard + mouse support. It should be no problem at all to play the games like Starcraft 2 on consoles next gen.
Reason 3 is also flawed. You don't need a GAMING PC to play classics. Every PC that was assembled in the past 10 years can do that.
As for Reason 2, I don't care at all about online gaming, but if Blizzard makes a new MMORPG and release it on consoles, this point will be obsolete.
Reason 1 is a gimmick. Admittely an interesting one, but as soon as the consoles will get 3D support in the next months, whis one is obsolete too.
Overall a pretty poor article that doesn't highlight the strengths of PC gaming at all.