They can do as much as they want. It's the owner's responsibility, thought. The owner makes the decisions. The waiter is the underpaid person, which will be replaced if they complain too much.
If I don't like a place I let the owner know and reduce my spending. If I like the place I tell the owner and spend more.
If I don't like a place I let the owner know and reduce my spending. If I like the place I tell the owner and spend more.