Any time you are the subject of prejudice, it is a source of stress. While it isn't at the level of a classic civil rights struggle, it still exists.

What prejudice? As the article says, if you look like the profile of a "bad tipper", you get shitty service. If you don't order alcohol/desserts/appetizers, shitty service. Split a large portion to not waste food? Shitty service.

It's a shitty system.