Exactly. Some content, like status updates, is perfect for Twitter or Facebook, but this article seems to assume that that's all anyone uses blogs for.

Please god say it ain't so. I would like to think that people who keep blogs (at least the subset thereof that also read Wired) tend to write more interesting things in them, and I can't imagine that being replaced by 140 characters (this notwithstanding: http://twitter.com/_why/statuses/881768089 )