But are you using confirmation bias to find a cognitive bias that fits here.

But, In all seriousness we don't have access to the data across all 60k FSD users to know what the intervention rate is and how it has been changing over time.

We do have previous statements that as they get better they are moving to harder situations. Start with empty roads, and once you can do them well start finding harder and harder situations. When you start you avoid construction zones, once you are doing well you start looking for them.

Dirty Tesla used to track these stats in his testing and gave up because “it’s not changing”

Which could be a sign some drivers are simply overly cautious. Suppose 1/10 of disconnects prevented a crash, reducing the risk of crashing to 0 only reduces the number of disconnects by 10%.

To actually reduce that number you would need to make drivers feel more confident in the vehicle which is a useful metric, but only indirectly relating to safety.