You're talking about personal driving, which is a different use case than robotaxis. For that, yes, you're better served with an ADAS system. It will take a while for L4 systems like Waymo to trickle down to passenger cars.
The point is that a "level 4 system" like Waymos is never going to trickle down to personally owned vehicles, because nobody wants to pay the hardware premium required for Waymo's autonomous system if it will be locked down to a specific city with specific routes.
Which is exactly GC's point – they don't want a car that can drive itself in Phoenix and SF and that's it. Most people either want a car that can make their life easier for a huge portion of driving but still require them to be in the driver's seat (e.g. Tesla's Autopilot) or a car that can actually drive itself basically anywhere (e.g. Tesla's FSD). Waymo's Level 4 just isn't that appealing for a personal vehicle.
This is why the SAE level system is poorly thought out and not particularly useful for anything except arguing over minutiae.
