I suspect that's the sort of practice they're trying to parse out for this Plus offering.
If someone wants to get in to steal something, they're going to get it done. That could mean a broken window, a broken door, or it could mean nothing broken at all. There's no-one within listening distance to hear a window break, so they're not going to get caught that way. But, your neighbors know your cars, and the sense of community commonly leads to a quick "hey there's a brown Buick outside your house, is that you guys?" call/text. There aren't very many "drive-by" robberies; houses are so far apart and all it takes is one person who sees a suspiciously slow driving car, or a car visiting multiple driveways, to call the police. Oh, and if you thought no one was home and you're wrong, there's a great chance they're armed, and they saw the car you used to get there. And the police are never busy, so they'll be there in minutes.
If the answer is never, then having your doors locked hasn't meaningfully increased your security (Only the perception thereof.)