Yes statistics are full of drivers with more than one accidents at fault. 15% of the drivers are causing more than 70% of the accidents.

I don’t care about the average driver. I care about the median.

It is not a high bar to expect an autonomous system to be better than 90% of the American drivers.

I mean, if some subset of those 15% used Waymo, we'd be better off, no?

Median and average driver are close to identical. This isn't income.

(Edit: I now think my comment above is wrong)