Perhaps he questions should have been, 'Who has not had any problem shipping are receiving packages via USP, FEX, Prime or any other means of page/ mail delivery',?
A USPS flat rate box I sent to my sister got there one day later than the post office kiosk said it would arrive. To me that is a victory. On the other hand I ordered something from a local shop on 12/14, it arrived at a postal facility in FLORIDA a few days later, I am in a suburb of Baltimore. A friend ordered fudge from Scotch Bonnet, Frisco, NC, The box arrived at a USPS facility outside DC within four days, not bad so far but that box hasn’t left DC since. The friend also lives outside Baltimore.
Now a few years ago UPS screwed up a package sent in October. It went Buffalo to Baltimore with no issues but then they redirected it to Chicago with no explanation. They knew it was headed to Chicago but said they couldn’t get the package off the truck until it reached the Windy City.