> it's not feasible to spy on every person to monitor them for wrongdoing currently

Sure it is! That's the whole point of search being the previous big technical hurdle. YouTube monitors every single video posted in real time for copyright infringement. We've had the capability to do this kind of monitoring for huge swaths of crimes for a decade and it hasn't turned into anything. We could for example catch every driver in real time for all across the country for speeding but we don't.

Mass is the opposite of targeted surveillance. If you need to be targeted and get a warrant to look at the data then it's not mass. And AI isn't going to change the system that prevents it right now which is the rules governing our law enforcement bodies.