I’d rather say we should be committed to reality than to facts. Just because something is a fact doesn’t mean it can’t be used to deceive.
Does this law have any legal effect at all? If no, it shouldn’t be a law. If yes, what effect could that possibly be other than giving someone a break for killing someone else with their car? If we want to use the word “murder” to mean “action for which there has been a criminal conviction of murder” then obviously this law will never apply to a murder. But when most people say “murder” they mean something more in the neighborhood of “wrongful killing”. And, yeah, this law could help someone get away with one of those, unless, as mentioned before, it does nothing at all.