That's not accurate at all. AI research has been around since the 1950s and pioneers of the field identified risks early on, including Alan Turing, Norbert Wiener, and I. J. Good.
The problem with Yudkowsky is that he lays out elaborate doomsday scenarios with extreme confidence, except none of it is grounded in realistic physical constraints, timelines, or empirical data. It's all divined a priori from Yudkowsky's ad hoc "rationalist" principles.