Honestly the change from 2010 to 2013 is bigger than the change from 2007 to 2010 - particularly all of the cloud stuff. (It's actually quite cool to have the same most recently used documents when you open up an Office app, regardless of which computer you're on).

In any case - overall I somewhat agree with the article, though I'd be surprised if Microsoft isn't aware of this themselves. I think Office 2013 is a solid upgrade for the desktop - though a solid touch version is indeed lacking. Here's to hoping they have one on the way, hopefully sooner than 3 years from now...