Comment by Natsu
If you actually ride in one, you do notice some off behaviors that I didn't pick up while just driving alongside them. That said, I agree that the bad human drivers have done things far, far worse than any of the cars.
The biggest gripe with riding in one is that they're slow, both because of super cautious driving and because they won't take freeways yet.
A month ago I saw a Waymo turn left into a tiny alley in Palo Alto and continue at full 25mph speed, which was alarming. I guess the alley is marked as a regular road in the software? Highlights how even if it's safer than humans on average, they need to minimize these weird behaviors in order to get socially accepted and avoid $$$ liability when there is an accident.