If Waymo is driving is the way safety engineers are trying to get everyone else to drive, then we should encourage it. There are some things where what everyone else does is wrong. (see the zipper merge)

The stats clearly show that Waymo gets into fewer crashes, though. In the remaining incidents, the other driver was considered at fault.

Bad drivers are a reality because we decide to tolerate them. We could just not tolerate them, like we don't tolerate bad pilots, bad train drivers, bad people etc.

There is widespread support for allowing people with DUIs to drive in this country. Even people who negligently kill someone with their car are still allowed to drive. There is no political support for banning people from driving.

I think that self driving cars will change “road etiquette”, as you call it, for the better.