[*sigh*] Are we so bored that we've allowed the security press to resort to printing the sort of yellow journalism crap where you should fear anything involving technology? It was a model. A number of assumptions were made (like one node's actual ability to infect another). Given the limitations of the standard access point and the technical requirements for one access point to "discover" others nearby, this isn't likely to happen. The study even stated such. However, the press managed to blow this up into "be afraid, be very afraid".
With this article, I'd much rather see people "be annoyed, be very annoyed!"