With Musk talking about AI the way he is, seems to me that he wants to use his reputation and the public's naivety to instill fear and have some control over the distribution of AI that works for general purposes...sounds like a great opportunity.
If he stays consistent with what he says about AI, I think he might be successful in deterring people from using useful and reasonable AI for a while. I wish he would take the dangers of new features like Autopilot in a production car as seriously though.