I don't think the imminent dangers of AI are self-conscious machines rebelling and deciding to kill people, but a much more subtle and nuance problem.
Let's say that you go to a bank and ask for a loan. The bank has a procedure to decide if they give you the loan or not. If your request is rejected, they can (hopefully) explain why you didn't qualify.
Instead, the whole process gets offloaded to a learning AI that makes that decision for the bank. For the most part, we don't really understand why systems like neural networks make a decision. Now if the banks denies your loan, the best they can say why is 'huh, the computer said so'.
What if suspiciously the banks start rejecting applications from an specific minority? Has the AI determined that this particular minority is trustworthy? Does it even matter?
What when AI systems are introduced in legal procedures? What when an AI decides if someone will go to jail or not?
Maybe I'm out of the loop but I feel these are more pressing issues about the widespread use of AI that are not being talked about enough (definitely much less than the doomsday scenario).