> A lack of a time machine does; the post upthread says "after they broke up". You won't be able to go back in time and install a second set of cameras to provide the cops with the full context.

I feel like my point wasn't clear. Nothing about Ring's decision here stops the bad one from doing what they did in your scenario. If the bad person controlled the cameras (and it sounds like they did), they'd still do the same thing regardless of this policy.