Propaganda aligning with a certain modern day cult and nothing but subjective anecdotes isn't proof of anything. First of all you'd have to PROVE the tipping difference is due to racism.... something this article fails completely at.
Let's assume that people are actually tipping "people of color" worse. Do you think getting rid of tipping is somehow fixing this perceived racism? If so, why do you believe you can legislate a personality trait out of people?