They had a few similar scenarios where people had clearly purchased expensive computer components like motherboards etc and then returned the box with some worthless motherboard in there instead of the expensive one. You can imagine some poor Amazon warehouse worker receiving the package, opening it up and seeing the motherboard "yup - looks like some computer gubbins. approved." and off it goes.
The video people seemed to react like this was quite a common occurrence.
So this makes me wonder, if amazon are bundling-up returned items into pallets and selling them in bulk, how did clearly returned items get sold back to an end user? Frankly I am amazed the scammer went to the effort of putting in a 8TB device and connecting it, rather than either returning it empty or with some random old IDE drive in it as a decoy.