According to various news, there had been malicious patches which were added to the Linux kernel with not much review, so at least the experiment was successful. If they hadn't written an article about how easy it is to add holes to the Linux kernel, they probably would have added even more security holes.

Long story short: it seems that the Bazaar model is broken by design and any system which is based on it is inherently unsafe and should be replaced by something less broken.