Amazon drops shipment, says you accepted it and calls it a day. Tale as old as time. You can replace Amazon by any shipping company. Good luck fighting it if you lose it or never wanted to accept it in the first place.
That's why for anything more expensive they will get a signature, and ebay requires signatures on high priced items, because the 5% risk at that price point is no longer acceptable.
The delivery workers just don't get paid enough money to bother doing it correctly.
Amazon has been my last resort for items going back a few years now. I am fine paying a bit more, waiting a few more days, or having to go out of my way to pick something up.
Life was fine before Amazon. In many ways it was better. We need to remind them of this.