The fatal accidents where the driver didn't respond to the warnings his car gave him?
No, he's probably talking about the fatal accident where the car didn't give any warnings at all. When Joshua Brown died his car was in autopilot and it didn't brake and it didn't give any warnings at all before it hit the semi in front of it.
There should be no role for a "driver" if the car is considered in self-driving mode.
The "driver" would then be just a person sitting in the driver seat that could be snoring or playing games on their mobile phone, and generally be distracted out of their mind...