His research may or may not be a dead end but his work, and this work, to me seems like we're building the neocortex layer without building the underlying "lizard brain" that higher animals' brains are built upon. The part of the brain that gives us emotions and motivations. The leftover from the reptiles that drive animals to survive, to find pleasure in a full belly, to strive to breed. We use our neocortex and planning facilities but in a lot of ways it's just to satisfy the primitive urges.
My point being, these new AIs are just a higher level "newcortexes" with nothing to motivate them. They can do everything but don't want to do anything. We tell them what to do. The AIs by themselves don't need to be feared, we need to fear what people with lizard brains use them for.