Is that why they've stopped publicly reporting disengagement data and stopped seeking certification in California?
It's funny, because it reminds me of provisional drivers in my home city of Sydney, Australia. Drivers with less than 1 year of road experience must show a red [P] plate on their vehicle. Drivers with between 1 and 3 years of road experience must show a green [P] plate. This is interesting to me because I consistently find that red [P] drivers are mostly conservative and green [P] drivers are mostly overconfident to the point of dangerous.
Some might say we shouldn't allow people with between 1 and 3 years of road experience to drive on our roads.
In my experience, it does lane keeping great and going in a straight line, slowing down for traffic. But that's about it. Making turns, the overall jank is unbearable in person (it doesn't come off as bad on video, but as a driver or passenger, getting constantly tossed around is not fun), and also just the unpredictability of the system makes it unusable for anything more than a parlor trick.
You're free to have your own opinion or listen to whoever you want, but I can tell you my experience has been consistently terrible and hasn't improved by any meaningful amount over the last 18 months.