delivery drivers lie all the time. when I was still in a row house, I watched the amazon guy from my window take the same package from door to door, put it down, take a picture, then pick it right back up and take it to the next stop where he did the same thing.
The ups guy that delivers to my work has been marking every package as signed for by a person who quit 5 years ago... Sometimes on stuff he didn't even leave at our building...
This kind of shortcut taking is why Uber now has the customer give the driver a code at handoff so the driver can’t just mark it delivered. (This is only when you opt for “deliver directly to me”)