Where Hinton was wrong: He figured if each radiologist could do twice as much work we'd only need half as many and therefore there would be an oversupply of them. Instead what happened is we now do three times as much radiology. I went over the economic reasons for this in the other comment.
I dont think its correct to say Hinton was wrong on his core claim that AI will radically change radiology, he was just wrong about what that looked like.