It's not illogical to say that more cameras would lead to more arrests of kidnappers, and other violent criminals.
I don't think many of us would object to video surveillance actually doing that. So, it's not even an immoral thought to many of us.
The problem is LE using it for almost any other purpose whatsoever.
This would be a potential point of conversation if the research didn't show that more ALPRs doesn't lead to reduced crime or more arrests - except in the very narrow slice of automotive theft.