More likely he is referring to the idea that AI is on the verge of destroying humanity itself. For instance:

http://observer.com/2015/08/stephen-hawking-elon-musk-and-bi...

Which makes sense. The opinion of everyone I know that has actually worked with machine learning and state-of-the-art AI (as in, written code, ran experiments, etc.) is that the idea of today's AI suddenly waking up and taking over the world is utterly ridiculous, or at least not something we should be afraid of for the foreseeable future.