Hackers have shaken the free-software movement that once symbolized the Web’s idealism.
And then fails to provide any real evidence that this is true. It should take strong evidence to reach the conclusion that an entire "movement" has been "shaken" to the point that it has lost its symbolic meaning. I skimmed the rest of the article, but the authors pretty much lost me after that bit of nonsense.
People (both good and bad) have been finding flaws in open source software for decades. No one in the "movement" was surprised or "shaken" to hear about a few new discoveries. These bugs earned extra attention because of the ubiquity of the software, but still -- nobody has ever said that open source software is somehow, magically, bug free. The "idealism" is that a) people can actually find the bugs by looking at the source rather than reverse engineering; and b) once a bug is found, anyone is free to modify the code to fix it, rather than waiting on a business to decide that it merits patching, perhaps weeks or months later. And, as far as I could tell, this all worked very well with the "Shellshock" vulnerabilities. The bugs were found, and the patches were written and released not long after.