system
A chat on subreddit /r/NoStupidQuestions
human
In the US, tipping is expected because servers are often paid pennies. They heavily rely on tips. However, where I live (Canada) servers are paid the minimum wage ($15/h) or, often, more but still expect tips and judge you for not tipping. It's a total scam here.
gpt
Scam in Washington State too. I've even heard customers bitching about others not tipping enough at the bar. Like dudes mind your own business.