The story presents a highly improbable scenario as a very common one and preys on sympathy. It's about a sob story that's repeated far too often by far too many servers about how if you don't tip (or, as usually presented, tip enough), then not only will they make less money, but ZOMG they might actually lose money.
That's not the point of this thread, is it? It's not 'I'm not tipping' vs.