Actually… in the 70’s that was true where I worked and as a checker I had full authority to make any decisions to make the customer happy.
Not today!
I had one guy bring me a split watermelon he dropped in the parking lot. Not our fault but of course I told him to go get another one.
One lady wanted to stick a carton of spoiled milk under my nose to “prove it to me”. I waved her off and told her I believed her and go get another
No bar code scanners for inventory control so I didn’t have to do any transactions at the register. Just waved them on as they walked out the store with their replacement item.
Simpler times.