The example he uses seems very apples and oranges to me. I remember a scene from Age of Ultron where 30 seconds after Ultron becomes aware he reasons that humanity must be destroyed. It's just a movie but that is more closely aligned to the reality people are worried about.
AI would eradicate humans for what? Just for lolz or it has any particular long term plan in mind? I would rather say AI could screw up while trying to help humans, we already saw that when badly designed or implemented AI algorithms screw up.
