Not to downplay this situation because it is a bad situation regardless but looking at the multiple articles that they have released on this and the lack of video that they have provided regarding it, without seeing the video it's hard to say who's at fault here. Well aside from the driver who hit and ran obviously.

It sounds like both vehicles had a green light at the intersection and I expect the second lane wouldn't have been able to see the pedestrian that was crossing in the first Lane to begin with. The article States the vehicle when it saw the pedestrian "braked aggressively" in order to try to not hit the person. I don't think that this is as simple as a oh there was a person waiting at the crosswalk so it shouldn't have gone, a lot of these intersections also have pedestrian lights on both sides of the crosswalk. Every article is blaming the autonomous vehicle, but I really don't think an actual driver would have done things differently given what has been released. In fact they might have actually made things worse by immediately driving off the person's leg/ankle instead of waiting for the lift.

I'll be interested to see footage when it's released cuz I'm curious this was an actual mistake on the autonomous vehicles part or if this was a it did what it could not actually being able to be avoided