Earlier quoted context omitted.
I'm more concerned about whether the store system gets my order right than whether I do. What if it, e.g., mistakes a can of soda for a 12-pack? Three hundred times on the order?
That would be very unlikely and easily reversed based on video data.
Would it?
>easily reversed based on video data
That suggests a level of effort from multiple parties well in excess of the typical "look at item; look at receipt"