More than what AI might "think"
It is about who uses it, the Terminator movies are about machines taking over, and human population gets oppressed. With the AI advancing to new levels, governments that have this advantage might just decide "get rid of them" (the terrorists, the people that think differently) in simple terms, and off they go. These governments would be like the Machines themselves... not accepting any other way of thinking but the "oppressor's".
How about developing AI to find better ways of producing energy? What causes wars and the need of a militia? Resources.
Could AI teach us new ways of using resources?
Anyway that's not what the article is about, but I think the scientists are foreseeing misuses (I consider killing a misuse of technology, but so were the described "revolutions").