Carrier refuses to deliver packages that won't fit in mailbox. Need advice.

Hello friends.

My USPS carrier refuses to deliver any packages to my home now that won't fit in the mailbox because he was asked not to drive through the middle of our yard. For reference, here is our yard on Google maps with his path drawn on it. Nobody was telling him to stay out of the yard or that he couldn't pull in the driveway, only not to drive through the middle of the yard as it was causing problems especially when it was wet. His immediate response was that I could pick up any packages at the post office from now on (said with a very poor attitude).

This Wednesday was the first time he's followed through on that. Tracking number 9361289695090062000324 for reference. He scanned it as "Notice Left (No Secure Location Available) at 8:31 am, 4-6 hours before he normally arrives in my neighborhood. I was working in my garage when he did make it around that day so I hurried to meet him at the mailbox so I could receive my package that way but instead he quickly placed the "We missed you" note in my mailbox with my other mail and continued down the road.

I've already tried speaking to the postmaster but he was pretty rude. He asked if my house was more than a certain distance from the mailbox (I want to say he said either a quarter or half mile) and I told him my yard/driveway was not big at all (you can see that from the street view I linked). He's still siding with the courier ("one of his best") through the entire conversation, even implying that I was being dishonest for saying that I would have no problem delivering at my own house (??? I work at FedEx Express and I would be fired if I refused to deliver boxes to every house that didn't let me drive through the middle of their lawn). He did say he would come out to my address and take some measurements but I don't know what would come of that.

Am I in the wrong here? Does USPS only deliver boxes to homes with circular driveways? If I'm not in the wrong, where do I go from here?

Thanks for reading.