To be honest, I think pop culture and doomsayers like Musk have been hyping up AI to be something it's not.
It's not actually "intelligent". It doesn't make decisions, it doesn't learn outside of its domain. It doesn't control things you don't give it access to. It's still a goddamn computer program!
People need to start worrying about the real implications of AI--mass surveillance, fraud generation, etc., not the Terminator or AI taking over the world. It's math, and math can be dangerous in the right hands; but it's those hands we should be worried about, not math itself!