How is crash data not relevant? Why would the regulators not be able to identify and go for the lowest-hanging fruit, regardless of manufacturing origin? Obvio

How is crash data not relevant? Why would the regulators not be able to identify and go for the lowest-hanging fruit, regardless of manufacturing origin? Obviously there are fewer data points for the Teslas, but they've outshone other manufacturers in all other safety tests (if I'm not mistaken). We're talking about people's lives here.