I'm going to say that these are not normalized. It's fairly well known (and NHTSA data backs it up) that the accident rate for the types of vehicle Tesla builds (luxury 4/5 door sedans) accounts for a fraction of total vehicle accidents.

A portion of this is a result of the ability for young adults to purchases $30-40,000 cars: 16-19 yo drivers make up around 2/5 of the total accidents in the US.

https://aaafoundation.org/rates-motor-vehicle-crashes-injuri...

Additionally, 4 door sedans in general (which describes most Tesla models) are only involved in approximately 27% of all accidents. The Model X, a compact SUV, only accounts for about 13% of all accidents.

https://cdan.nhtsa.gov/tsftables/tsfar.htm# (look at table 37)

But it doesn't make for nearly as good of a press release.