I don't know who needs to hear this, but working class people going out for an occasional nice meal shouldn't be held responsible to pay other working class people a liveable wage.
Tipping is supposed to be a reward for exceptional service. Not an obligation.
Call me a Europoor, but the American tipping culture is fucked, extortionate and exploitative. It puts the moral burden of paying restaurant staff a liveable wage on the customer rather than their employer.