That's the whole point : people who could use it should just be paid decently from starter. Tipping is just an unnecessary social pressure, and if you read what

That's the whole point : people who could use it should just be paid decently from starter. Tipping is just an unnecessary social pressure, and if you read what people actually say, this is not about the few bucks it costs, it is specifically about the practice which introduce doubt and insincerity in what should be a dead simple process. Increase the prices, and pay people decently, but don't tip.