Even in states with a lower tip worker's minimum wage, they are still guaranteed to make the standard minimum wage if the tips don't make up the difference.

Serving up food you didn't even cook isn't an intensely difficult or skilled job. Nobody should expect a 20% cut for doing that. It is not a customers responsibility to ensure unskilled service workers are rolling in largesse. Just making minimum wage is fair for that kind of work provided the minimum is livable.