Until then, it's a revolving door, and vested interests target to make customers and wait staff angry at each other.
However, given the spurious type of work this involves, employers have the advantage, so the employees have no recourse but to blame any one they can, including bad tippers.
The tipping culture in the US is disgusting by modern standards of society, but there is no mechanism to unionize wait staff, or kitchen staff, dishwashers etc. included.
There is, however, a "union" of restaurant owners who lobbies against improving minimum wage and working conditions for restaurant workers.
https://en.wikipedia.org/wiki/National_Restaurant_Associatio...