Do you know what your problem is? You don't understand human nature and you don't understand economics.
The reason most barbers don't learn how to cut the hair of black people is because there is no market for them to do so. How many black people are going to go to a white person to get their hair cut? About ZERO. Now, if a white barber suddenly had dozens of requests to cut black people's hair, he would probably and VOLUNTARILY learn how to do it. That's the market deciding. Statists like you want to FORCE, through the power of government, people to waste their time and money on things that they will never do in the marketplace.
His proposal is IDIOTIC.