This report is good and I think I can agree with the results. I think most people forget how terrible human drivers are, yes even you sometimes. We all get tired, frustrated, bored, and distracted sometimes and we end up making mistakes. No, FSD/AP isn't perfect and yes it makes mistakes, but (according to this data) those mistakes are fewer that when we are in control.
It seem like everyone in all of these "auto-drive" conversations expects computers to be 100% perfect all the time and never, ever make any mistakes at all. That's just not reasonable. It might, MIGHT, be possible if/when all the cars on the road are computer controlled. But put a human in there and all bets are off.
As for the recent "pileup", yes it's terrible that people got hurt and it should never happen. However, how many of these same type of accidents have been caused by humans over the years? Has a human driver never stopped in the middle of the road? Has a car never broken down and not been able to get clear? No, those things happen every day. And we don't see them on the news precisely because they happen all the time; only new and unusual events get news coverage.
BTW: I had a tractor trailer stop in front of me on the expressway once because they had missed their exit and was trying to get over. Being completely stopped while cars are approaching you and whizzing by at 75MPH is terrifying. Humans are bad drivers. Full stop.