NO, a human driving a car and hitting another person is NOT perfectly fine.
People just didn’t make a big fuse about them because our society already have the institutions to deal with this kind of situation.
The driver would be punished according to the legal institution. If it is a deliberate murder they would go to court and be trailed.
Local media will also make sure the culprit would be punished socially. Everyone in town will know who hit our neighbor.
On the other hand, the responsibility of driver-less vehicles are not well defined yet. Is the engineer responsible? Is the programmer responsible? Is the CEO of the manufacturer responsible?
This is why these incidents receive so much outcry.