This is just asking for someone to come steal those packages. It's one thing when you have to scramble for boxes, but when everything is in a neat little bag like that, why wouldn't you just grab it and run? Common decency? Well some of us don't have that! Unfortunately this mailman most likely didn't have any other options. Send all complaints to Amazon, not the post office.
Luckily I don't have the problem of people stealing my packages. It's far too inconvenient for anyone to get to my front door, plus I hire armed guards to stay at the door at all times. Everyone says it's a waste of money, but they're forced to talk to me while they're working, so it's kind of like having bodyguards and friends. You can't beat that deal. It's a two for one special.