I personally prefer self-checkout when I'm at the grocery store, but I 100% agree about running the things. I was working at a grocery store when they first started rolling out, and there wasn't any training on them back then. I am not at all surprised to hear that hasn't changed. I distinctly remember the way the # of tills that needed help would seem to spike all at once, like one problem would cause another and soon you have four people all needing help with different things and being very unhelpful about it. Felt like playing a surreal game-show version of whack-a-mole for eight hours.