I'm thinking maybe it was done to show how ridiculous affirmative action and identity politics are. In any one area most people are close to the same level in life. So the idea that 2 people that are from similar backgrounds would have to pay for the same thing different prices do to their skin color or gender seems stupid. Is a practical example that may work, you may not change the mind of leftists but there may be a few centrists that can be swayed by it.