I always press the frowny button in grocery shops, not necesarily because there were long lines or because the shelves weren't stocked adequatly, but if I press

I always press the frowny button in grocery shops, not necesarily because there were long lines or because the shelves weren't stocked adequatly, but if I press the frowny button I assume the place will get even better. I disagree with those buttons because you can't really find the cause of a problem in a giant macihnery with just a single output. So the feedback is probably close to useless.