LOL it would be in any driver's best interests to close their mouths and avoiding uttering audible nonsense until they are back in the package car and sure no one can hear them. I can't tell you how many times I have been walking to a door, down an apartment hallway, or sorting with an earbud in on the phone and have to watch what I say out loud. Those of us that are drivers work in public and the customers we deliver to pay our salaries, in part. They can't wait to whip their phones out or submit a video of a UPS driver going XYZ thing wrong. I don't know about you, but I enjoy the standard of living this job provides for my family, so I'll keep my opinions to myself.
p.s. It's ok to mutter "scumbag" or "who orders this sheet?" under your breath from time to time. But I wouldn't say it at the front door like this schmo.