This is why Target self check out is the best. They have confidence in their theft deterrence so their machine has a lot of leeway and yells at me less for weight issues.
On the flip side, you could also sue and win lots of money. https://www.nytimes.com/2021/12/01/us/walmart-shoplifting-la...
It has, a couple of times (that I noticed). It's a hassle because it meant that I had to return to the store to pay for the item that was accidentally skipped.
So, I consider self-checkout a real plus, not them stealing my labor. The exception is when the system is ill-designed or ill-tuned, so it halts and I'm effectively debugging it for them, except nothing is fixed b/c the employee just logs in and waves it through. With that exception, I still much prefer self-checkout.