@108 It's optics, but it's stupid. They can't send you a message saying 'oops, we fucked up the delivery route', or 'shit, sorry, we don't have any drivers to deliver you package'. It's easier to say this, and have you scratch your heads on social media.
@108 I found out today from talking to another Amazon delivery dude that is third-party that the message doesn't mean they attempted delivery. It's the only code they have. If their route gets messed up, there aren't enough drivers, it's always 'failed attempt to deliver'