This is really an argument about whether or not proprietary systems are inherently more secure. I run Arch on my main system, and when a vulnerability is disclosed, it's often patched within hours. Windows is littered with bugs, vulnerabilities, and security holes. Older versions have been left to rot, leaving thousands of systems vulnerable.
Of course, it could be argued that the weakest link in the chain is the user, but with a vulnerability like this one, I don't see how that applies.
Of course, it could be argued that the weakest link in the chain is the user, but with a vulnerability like this one, I don't see how that applies.