No matter how good a technology is, it can never be 100% safe. I have watched that video over and over again. Considering the speed (which was okay) and the sudden appearance of the pedestrian, am sure nothing would have been done even by a human driver.
If we are to debate whether autonomous cars should be used or not, this shouldnt be part of the argument. Well, there's something I like telling people. We can argue on for ever but self driving cars are here and they are here to stay, it's better people learn to readjust to the changes it will bring.