You are trying to judge the self driving feature in a vacuum. And you can't do that. You need to compare it to any alternatives. And for automotive travel, the alternative to FSD is to continue to have everyone drive manually. Turns out, most clowns doing that are statistically worse at it than even FSD, (as bad as it is). So, FSD doesn't need to be perfect-- it just needs to be a bit better than what the average driver can do driving manually. And the last time I saw anything about that, FSD was that "bit better" than you statistically.
FSD isn't perfect. No such system will ever be perfect. But, the goal isn't perfect, it just needs to be better than you.