This metric says nothing about self driving capabilities. In fact, I'd argue that FSD supervising the driver (and doing things like limiting speed before corners) would make their cars safer.

To me this metric shows that their cars are very high performing, and for most drivers they're probably the fastest accelerating cars they've ever driven. Tesla should probably default them to 'chill' mode and provide a warning about how fast the car is when you switch out of that mode.