Yeah. Dumb robots a a greater threat to mankind and I’m not talking about the democrat kind.
People imagine robots that would have some reason to exterminate us but never get around to explaining why robots would want to.
Not for nefarious reasons (not "terminator like"); but for reasons of matter and energy. You and I won't witness this technology, probably not even our grand kids. However, if an intelligence explosion happens with an AI it might seek energy and use matter to extract that energy. If nano-tech keeps pace, we could very well be seen as nothing more than clumps of matter/energy to a super-intelligent AI and be used to "feed" its energy needs (similar to how we use cattle now to feed ourselves). The problem with AI is we will never truly be able to understand how it "thinks". It won't have "emotion" as you and I understand, it will most likely have its own evolution in "mind" and figuring out ways to ever increase its resources. Far out there, I know. There is lots of good hypothetical reading on this subject online as well as in books on Amazon.