alt Hacker NewsHe made specific predictions about what problems AI would cause, not just a vague "AI will be dangerous". Those specific predictions were entirely incorrect; they both said that things would happen that didn't, and failed to foresee any of the actual problems with AI that have happened.
Yudkowsky said AI would be a problem when very few people taken seriously in the mainstream were saying it was going to be a problem. Saying "specific predictions are wrong" is missing the forest for the trees here.