On a visit with my mom to the bay area a few weeks ago, we went into a chain philly cheese sandwich place and after placing our order the guy at the counter directed her to the POS screen to swipe her card and it automatically suggested a 15% tip for the counterperson. I watched the visible uncomfort on her face while she tipped this business out of guilt, all the while my mouth was open wondering where it all went wrong. we had zero interaction with the counter guy beyong saying the order we wanted.

Don't tip anyone! Thats how it spreads