Let’s say, hypothetically, that someone has gone thousands of miles on FSD without intervening. What information would need to exist to convince you of this?
More than a random Twitter feed and a news post from a company which is known to spread lies, that's for sure.
cryptographically signed timestamped raw log data.
The verified, raw data of at least 1,000 other people's worth of data, so the data has a chance of being statistically significant, rather than 1 random dude out of billions posting on the car company CEO's website (on which said CEO is infamous for moderating content to suit his views and ego).