if you look at the posters items they mostly fit into 2 catagories, small items that would fit into a small padded bag or larger very heavy items requiring strong boxes with lots of bubble wrap/ect.

i cant see a delivery driver throwing a small padded baged item anywhere.

also i find it hard to believe a driver would throw a heavy box, 1kilo at least, out of his truck/van/wagon/hand kart, either.