They must have some weird rules. I get rural delivery (though the guy drives a USPS mail truck vs a personal vehicle). My mailbox is 1/4 mile from the house* out on the county road. I actually bought an extra large box so he could drop Amazon packages in it. Otherwise, if the package doesn't fit, he drives down the road to the house, then sits in the truck and honks the horn until I come out. Though a couple of times when I wasn't home, I've found the package sitting on a chair on the porch.
UPS and Fedex both just drive to the house, leave the package on the porch, and ring the bell without waiting for someone to come out. The delivery guys that bother me are the contractors that Amazon has started using that show up in their own vehicles. I have found packages sitting on the far edge of the driveway 50' from the house, and also left there in bad weather. I also a couple of times found packages sitting on the rear bumper and once in the bed of the truck. I have no idea what those knuckleheads are thinking.
* While we don't have any real mailbox theft problems, I've always wanted to install one of those wireless sensors in the mailbox to let me know when the mail has been delivered. I can actually get a wireless signal with my phone at the mailbox this time of the year, but when the corn is up in the Summer, I barely get anything 100 yards from the house. That's also the time of the year I can't see the mailbox from the house.