They were not right about everything and they - at least Yudkowsky - has not made specific predictions about "when AGI" will happen that I am aware of. But he did predict it is possible in our lifetimes, which I was very skeptical of. He did predict alignment would be hard - I was in the "why would we even hook it up to the internet?" crowd. He thought he should spend his time on that, and I wish he'd done more of that, or at least convinced others to do more of that.