I don't know the pay structure for Amazon drivers, but I would not be surprised that we are giving up "trustworthy" drivers for the cheapest option Amazon can provide at scale. I've heard working at UPS as a driver is a great job long-term for some people perhaps leading to more integrity, but I'm just speculating. Maybe I'm wrong but I trust UPS or FedEx with my packages more than Amazon or their flex drivers.
But larger scale it made me doubt if their model of Uber style contract workers doing just in time delivery with incredibly tight deadlines can ever work. For the speed they promise at their scale I don't see how they'll get around hiring more workers, giving more reasonable workloads, and providing incentives to actual get the job done right instead of lying to try and meet their numbers.
I went to buy it from the manufacturer's website instead. Ships without trouble right to my apartment, and I don't have to worry if I'm buying damaged goods, a knock-off, or some garbage. Someone is doing some terrible Pinto-style calculations, shaving pennies here and there while losing pounds building a delivery network that gets 'most' packages 'somewhere', 'most' of the time.