A recent example - a few weeks ago I follow another car in making a turn down a side road, when suddenly that car stops dead (for no externally apparent reason), and starts backing up fast about to hit me. I immediately hit my horn and prepare to back up myself to get out of the way, since it was obvious to me - as a human - that they didn't realize I was there, and without intervention would hit me.
Driving away I watch the car in my rear view mirror and see it pull a U-turn to get back out of the side road, making it apparent why they had stopped before. I learned something, but of course the driverless car is incapable of learning, and certainly has no theory of mind, and would behave same as last time - good or bad - if something similar happened again.
My point was that if you are part of one of these accident-prone groups, you are certainly worse than average, and are probably safer (both for yourself, and everyone around you) in a Waymo. However, if you are an intelligent non-impaired experienced driver, then maybe not, and almost certainly not if we're talking about emergency and dangerous situations which is where it really matters.