In the age of the electron, what really matters — what wins every time — is opinion in aggregate.
Biased article. I'm going to choose to believe one of the foremost innovators of our time over someone who had a vested interest in manufacturing a story.
It sounds to me like the Model S merely requires a semblance of human intelligence to drive, which is not remotely surprising. Here is a reddit AMA by a Tesla owner which is a lot more objective than the so-called journalism in the article above.
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All that said, you're right that Musk needs to bury this story. Best way to do that is to offer a whole bunch more test drives to other newspapermen, bloggers, and everything in between.