But also, unless the vehicle was stolen, why not put the burden of proof on the owner. Don't people know who they're giving their car to? I think that's how it works in many European countries. If the car is stolen, just file a report.
In the U. S., I'm innocent until proven guilty: prove it was me. No, I'm not telling you who was driving, because my lawyer said something something 5th amendment. But that's the theory, as this not-a-lawyer understands it. In practice, you'll just pay the ticket because the future of civil rights law does not rest on determining who was driving the car that day, and you know it was you anyway.
This is trivially circumvented via "attach fine to car" and "driving in a car with fine attached is illegal." (AFAIK that's how it works in Ukraine).
End result is the same.
If it were a civil infraction, with no license points, they'd have a better standing, but nobody has bothered to take that path.