This. And I do their work a lot more slowly because it's not my regular job, and I actually already had to do some of the work (getting the items out of my trolley and onto the conveyor). Now I stand there forever fumbling with barcodes, trying to get bags to stay open, switching between getting items out of the trolley and scanning. The old checkout system is so much more efficient when you are buying anything more than a couple of items at a time.
Yeah this is like saying Aldi “automated” cart return. They didn’t, they got every shopper to do the work themselves. Automated cart return would be if you just gave the cart a little “giddyup!” when you were done and it found its way home. Or those cart conveyor belts at Ikea, it’s only part of the process but that part is automated.
[edit] Aldi did automate the management of getting shoppers to do that work, because there’s not a person standing there taking and handing out quarters, but (very simple) machines. Without those machines they might need a person, so that hypothetical role (the existence of which might make the whole scheme uneconomical) is automated. But they didn’t automate cart return, all that work’s still being done by people.