Interesting article. I think he's pretty much completely and totally wrong on almost every bit of it, but it was still interesting. ;-)
Getting your news from RSS readers is like reading a newspaper, magazine, or even a book. You have the ability to organize and filter what's coming in, and you can choose your sources more explicitly. Additionally, there's a reasonable level of depth to the information coming in.
Getting your news from Twitter and Facebook. . . is like watching TV. You can flip channels, but you can't control what's coming in to the same extent. It's random, and it's ephemeral. If I put down my magazine, I can pick it back up a week later and continue where I left off. If I turn off the TV, whatever I was in the middle of is gone, and I may not be able to get back to it.
Personally, I'll use Facebook for social aspects, and I'll use RSS (and Google Reader) for my news, blogs, etc. As for twitter. . . a few tweaks to it, and it might have been a "good enough" option for some things. Unfortunately, 140 characters pisses me off to no end, and the content is just too shallow. In order to get even the slightest depth, you have to link out to a different, less limited alternative.