Why not think about the issue of a safe delivery. If no one is home, the package is either not delivered, or it's left on the front porch.
Sundays, especially in the Summer are months for folks to leave home, go to baseball games, cook-outs, or even some of the pre-season football games.
Most Americans don't like to sit at home waiting on a Sunday for the Amazon guy to deliver sometime
. FE and UPS do not deliver on Sat or Sunday in my town. Packages are delivered on Sat and Sun by USPS and delivery on both days takes place prior to 12 PM.
That makes a far more sense than Amazon's delivery practice on Sunday.
( As far as I'm concerned. However, everyone is entitled to their own opinion.)