This seems to suggest that the humans wreck more often when making lane changes or making evasive maneuvers.
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Or humans aren’t quick or alert enough to make the evasive maneuvers made by Autosteer. The NHTSA made a simple study based on airbag deployments on cars that had Autosteer installed. There was a 40% decrease in deployments. My understanding is that these cars already had Traffic Aware Cruise Control installed.
You seem to be making any and all possible logical contortions to avoid giving Autosteer any credit.
Sounds to me like the autopilot works great until it doesn't. The accidents that have made the news recently appear to have one thing in common. The drivers weren't paying attention and it cost a few of them their lives.