There's also a strong selection bias to a bulk stat like the one parent mentioned. Teslas are expensive cars and I'm guessing their drivers are likely to be older, more affluent, and more educated that average - this all correlates to lower accidents/fatalities regardless of FSD[1][2].
[1] https://pubmed.ncbi.nlm.nih.gov/24103823/
[2] https://personalinjurylawyersaustintx.com/blog/education-lev...