This reminds me of the time I was distantly following a Waymo car at speed on 101 in Mountain View during rush hour. The Waymo brake lights came on first followed a second or two later by the rest of the traffic.

Better reaction times only matter if the decisions are the same / better in every case. Clearly we are not there on that aspect of it yet.

Deciding to crash faster, or "tell human to take over" really fast is NOT better.