FedEx and UPS are likely hit by this as well. Given driver behavior in the past few years (throw packages at doorstep, buzz all units in building and don't wait for an answer before speeding off), they're probably judged on packages delivered, so they're optimizing for quantity, not quality.

I wouldn't blame Amazon's logistics group for this, but simply the rise of delivery shopping (in large part fueled by Amazon). It's really hard to scale that, especially at the low (or zero) shipping prices customers have been trained to expect.