Probably not. It's an interpretation that the word "driver" in one particular legal context does not necessarily mean a person, not a decision that computer programs are people.

This simply seems to be (without the text of the letter, just several news reports) an interpretation of law which is a basis for NHTSA to subsequently rewrite vehicle safety equipment requirements to support fully autonomous vehicles at the federal level.

Because of the way legal definitions are context-specific, it doesn't necessarily mean anything to anynof the other laws regarding drivers, much less anything outside of that domain.