So... about those HD maps. Can we continue discussions from the agreed upon understanding, if you need to operate on the assumption map data could be inaccurate/out-of-date you can functionally operate without them.
I am not sure we can say that. The whole point of HD maps is to provide the car with information that it cannot get from cameras. So even if your camera vision is so accurate and reliable that you don't need HD maps for redundancy, you will still need HD maps to get information that you physically can't get with cameras or that is difficult to get from cameras:
"A HD map is therefore necessary as a reliable off-board sensor containing processed a-priori information
to "detect" features that are not easily detectable by on-board sensors or to provide a redundant source of information for on-board sensors..."
Source: "Safety First for Automated Driving"
There is also the issue of how reliable your HD maps are versus how reliable your camera vision. Obviously, if your HD maps suck and your camer vision is great, then you won't rely on your HD maps. But if your HD maps are accurate and can be updated easily and efficiently, then it would be silly to toss them, just because you also have good camera vision.
Personally, I think the argument that HD maps will get outdated too quickly to be useful to be a false argument. Most of the a-priori information that you can't get from cameras won't change very often. How often do they change a one way street into a two way street for example? Not very often. And if say road construction happens, then you can update your maps for that area. In my town, roads get worked on every few years. New traffic lights or new stop sign locations don't get added that often. It should not be too hard to update HD maps for a town every 2-3 years for example.
Also, remember that you can update HD maps with any car in your fleet driving that area. So every car in your fleet can be continuously updating the HD maps for the fleet. Toyota also has a new method of updating HD maps via commercial satellites. Nvidia has end-to-end creation and updating of HD maps. So keeping HD maps updated is not as big a problem as people seem to think, IMO.
But if your vision is good enough to easily update maps, then why not just use camera vision exclusively? Again, you still need HD maps for information that you can't get from cameras. And it is still helpful to have HD maps as a redundant source for the rest of the fleet that visits that area again after the first pass that updates the HD maps.
Waymo and Cruize are not consumer vehicles, while I can appreciate the comparisons on a technical curiosity level, any system that reduces the rates of accidents, even if just while on the forward path to "FSD" claims, is in fact good enough.
I agree that reducing the rate of accidents is a very good thing. But I don't think we should be happy with just slightly safer than human drivers. If we truly want millions of L5 autonomous cars that can safely drive us around, then we want the highest safety possible. Anything that can further improve safety should be looked into.