I don't doubt Waymos are very safe, but I always irk at these comparisons. Majority of human accidents are due to gross negligence and/or driving under some influence or serious fatigue. A system incapable of alcohol etc. is better than that? Well that is a substantially lower bar than you can possibly imagine. Add to that that all systems have constraints on how and where they are able to go. Combined even Tesla can be made to look good.

Depending on the context and question it might still be the question to pose. But people often make the leap to assume that a typical Waymo is x better than a typical human driver which is an entirely different question entirely.

Waymo is for sure one of the (if not the only) good players out there though, gives me some hope.