I'm sure we will find out soon enough what the true cause of the accident was. Air crash investigations don't take two weeks!
If even a small % of cars on the road these days were self driving, but lets say a majority, you would assume the death rate would go down on average. Is it possible for the overall rate to go down while your own personal risk of death (being in a self-driving car) goes up because of the programming unknowns?
It's not just about deaths though. Self driving cars are better drivers than humans - a study found adding just a couple of self-driving cars to traffic will even out traffic flows as they are not stop-start like many human drivers are.
IMO why they are better is they drive properly, obey the rules, are far more attentive, and take the correct action, and save 3/4 second reaction time. Little of which applied to the Uber car. Oh, and the driver is alert too, another fail