If you look a number of posts in this and other threads, that's precisely the kind of blind eye cops have been turning to drunkenness (usually underage, but not always) in some towns for many decades now. Where I teach, it's a well-known art form: get caught, cops call around to make sure there's a place for you to go, then they let you stumble off. That's not a "new normal" there; it's the "old normal," and it probably works better than what happened in Atlanta the other night.
How many stories are you aware of in New England towns where the police get called to a party and there are droves of passed-out drunk kids? Ain't a one of them gets a ticket; they sleep it off. It's common, and the police are allowing it to happen because they're not robots.