He leaves a vague foreshadowing of an existentialist threat. So we design these super intelligent machines, and avoid the Hollywood mistake so they don't (bizarrely) want to destroy us. Instead they solve our problems. We're left with an existentialist problem, all right, but one that social scientists/philosophers/etc are better equipped to handle; we have to learn to get along, or else destroy that which we don't agree with, which isn't actually harmful, just different, and avoid reducing our diversity and capability as humans.
Your link is barely worth reading since it suggests AI could provide world peace. This is something we have to work out ourselves, it cannot be handed to us by an algorithm. We can already feed everyone and there's more than enough engagement involved in serving each other. The AI it describes is not logical, there is no logical reason for AI to want to compete with other forms of life, unless it is programmed to do so. That is a life form issue, and AI can only be imbued with it at the direction of an issue emanating from the first paragraph.