Second, why is this a problem with CC? It would be a problem with anyone placing a copyrighted work under any license, or even claiming copyright on a work copyrighted by someone else. It's more a problem with copyright and the legal system.
Well, with any other copyright, I think there's very stringent usage rights set and signed for and everyone's aware of who's using who's material. Not so in the CC world, or at least they don't want it that way. So it's a bigger problem there because people are 'free' to use everything and I'm sure there's sites out there hosting CC sound clips and images and the like. This kind of orgy of use is what makes CC particularly vulnerable to these scam artists.
The article appears to complain about the case where a 12-year-old takes a copyrighted, non-CC-licensed commercial photo from a third party, removes any copyright notice, and put its up under a CC license. GP has it right -- this is no different than if the 12-year-old takes that same image and sells it to a third party, or simply hands it to someone and says, "you can use this photo I took for any purpose you like." The same rights and remedies apply, and it really has nothing to do with the CC at all.