First, to the story poster, the Sony that made the rootkit isn't the same Sony that makes the PS3. Sony Music made the rootkit, and Sony Computer Entertainment makes the PS3. Yes, same parent company, but two very different divisions. Also, SCE doesn't make Sony computers. Just because the name Sony is common doesn't mean it's the same division, or even the same company. Each division can have vastly different philosophies. So comparing SCE to Sony Music or Sony Computers (whatever the exact company names are) makes for a flawed argument.
Anyway, to me, this story and a number of replies to it smack of open source elitism. You know that's why Windows and Mac users don't much care for us Linux users, right? Open source isn't the be all end all solution to everything. Yeah, I use Kubuntu Linux (Jaunty, to be exact), and I have since December 2006. I'm quite happy with Linux. But I know that open source can't do every single thing perfectly. I use the closed source NVIDIA graphics driver, because the open source version isn't up to par. I use Adobe Flash Player, because Gnash can't hold a candle to the official product (not yet at least; I tried Gnash on Homestarrunner.com and Weebl's Stuff, and the video was much slower than the audio, causing a huge syncing issue). At one point I used the Adobe Acrobat Reader, because the KDE PDF viewers at the time couldn't support editing PDF forms and emailing the results (functionality of a more recent version of Acrobat).
Sony removing Linux support from the PS3 Slim isn't the end of the world. You can still install Linux on the pre-Slim units. My 60 Gig PS3 (now with a new 120 Gig HD) still has the Install Other OS option. I don't use it, because it would be redundant, seeing as how my computer and PS3 are in the same room. But I still have the option. It isn't like the feature is being removed from every PS3 in existence. Besides, I don't understand why someone needs Linux on their PS3 and their PC at the same time. Sure, I can understand the curiosity factor. But I don't see what other functionality you need that the PS3 doesn't have to begin with, or that you can't easily get on your PC.