Interesting that the article repeats the "has been widely derided as a secretive attempt by a specific vendor to push copyright assignment policies on the community" meme without mentioning the actual vendor involved :)
I think the main problem with this effort is that $vendor aside, there really isn't much demand for these types of documents at the copyright-assignment end of the scale. It feels like they've created a spectrum to make their end seem more acceptable, when most of the projects I can think of that use them (Fedora, Zend Framework, etc.) are clustered at the other end and many simply don't use such documents.
Seeing copyright-assignment as simply another choice on the spectrum is just plain wrong. It isn't, there's a huge divide there, and frankly it wouldn't even be appropriate (IMHO) for the FSF to be doing it if they didn't have the long history and non-corporate status that they do have.