If you don't like going to the grocery store pay someone to go get them for you. Thousands of people remotely "following" you around and scanning things for you, just so that you can avoid using self checkout sounds ridiculous and excessive.
And the workers just sit idle when there is no customer and you have to physically go there. So I dont see the clear advantage, i see it more as a "choose your poison"
It wasn't all manual.
An important question to ask is how many minutes of camera-viewing there were per customer. Let's not assume too hard before we judge the level of wastefulness.