Nothing new. Over 20 years ago I was working out of state, and had supplies shipped to my house, paying extra for expediated shipping so they would be there when I got home.
They weren't.
I left a big Rubbermaid plastic waterproof box on my doorstep, with a note saying "please leave packages in box." When I got home 3 weeks later the first thing I saw was my package setting on the doorstep... right next to the box.
A large part of it is that the shipping companies are so busy they don't have time to stop and read. I see UPS trucks out until after dark... one driver said he's made deliveries as late as 9:30 at night. I believe that Prime has helped us to expect unreasonable turnarounds on our ordering, and now it's coming home to roost.