This exploit COULD be real, and if so, I thank them for uncovering it, on behalf of 4+ year-old AirPort users. They have done a great service, even though they intentionally did so in a way (not letting Apple know) that could help hackers rather than users. That's immature, but in the end the result is that an exploit (if real) can now be prevented.
However, they lose a lot of credibility when they re-state the original claim about AirPort hacks, and refer to FUD and cover-ups when that claim was debunked. They know as well as anyone that the "60 second" AirPort hack was not for real, and to state falsely that it WAS real leaves me skeptical about their other claims. But others can easily determine that one way or another now.
In any case, they, like some posters here, are clearly acting out of emotion against Macs. I would remind people that having positive emotions FOR a tool that helps you is quite rational, more so than having negative emotions about a tool nobody forces you to use. Liking Macs makes sense. Not liking macs makes sense. Liking Windows makes sense too, if it's a tool that serves you well. Hating Windows makes sense--IF you are forced to use it, as many people are. Hating Macs, and the childish emotions people are venting against people who like Macs, is just not rational in the same way. (Unless, of course, the people getting emotional against Mac users have been forced to use Macs at work, the way people are forced to use Windows. Unlikely, but if so, I can appreciate their frustration, even though they need not take it out on Mac users.)
People who insult Windows users JUST because they like Windows--and people who insult Mac users JUST because they like Macs--are barking up the wrong tree. Put down the product (Windows or OS X) for its flaws. Don't put down the people who find the tools useful and even fun--they don't hurt you.
And if you don't think a "tool" CAN be fun... you may wish to try other tools
EDIT: as BWhaler said, I've never seen a single Mac users claim that Mac security is perfect, only that it's much better than Windows. Undeniably still true, and undeniably by design. (And yes "obscurity" helps too, obviously--just don't make the mistake of thinking it's the only thing that helps Macs.) The people claiming Mac users "think Macs are perfect" (we don't) and get angry about how much easier Mac users have it (and still will, even when we have our first successful real-world virus someday) are understandably upset: they face frustrations with Windows that we just don't have to deal with, and never will on the same scale as Windows. But we will and DO have to deal with security issues from time to time. "Much better" is not "perfect!"