Yeah, It has never been dropped. I just think it is interesting that it is so close to the screw. It is a very small hairline crack that is difficult to see with the eye. I photographed it with a 100mm Macro lens and the pic is a 100% crop.I can't really see them not replacing that. Unless there is some drop damage somewhere else in the phone. But if your phone hasn't been dropped that's a manufacture defect.
I would be more surprised if it wasn't next to a screw. What I'm surprised about is that it's cracked and not bent. They keep saying how soft the aluminum is. I would expect that soft aluminum wouldn't crack without being bent.I just think it is interesting that it is so close to the screw.