Definitely first world problems but there is no excuse for some of the things delivery drivers do. I don't feel sorry for people when they claim "i can't make a living wage" when i watch the type of work you do. Or lack of.
Where do you guys live? In my neighborhood, the Amazon and UPS drivers drive just as safely as any other driver, park the van, walk the package up to the front door, and then leave. And they speak English.
Most of the time its not the actual amazon or UPS drivers. Its the third party drivers who are delivery for amazon, UPS or fedex to keep up with demand.