Saying it was the sensors that caused the guys death is like saying it was the powerstation that generated the electricity that ran the car causing his death.

He was told, repeatedly, to keep his hands on the steering wheel and to watch the surrounding environment. He even apparently understood the limitations of the system, having recorded a number of scenarios (many of which are situations where AP shouldn't have been engaged anyway) where the car's ability to handle the situation was marginal at best.

So, him deciding to (apparently) watch a video on a tablet while driving down a public highway isn't really the fault of the AP system.