Camera-based violations are typically civil instead of criminal. AKA pay fines instead of getting points on your license or facing jail time.

If you want the jet-black cynical take, this is because repeat offenders are better for the municipal budget than turning them into non-drivers.

A more measured take is that it's very hard to prove who was driving just based on these cameras, so while the registered owner can be civilly responsible for what their vehicle did, it's a bigger challenge and expense to prove that they're criminally responsible.