Nowadays I am bald and don’t go to any barber shop. But in my younger days I felt that I got better results at a barber who has a lot of customers with similar hair as mine. I am turkish (living in Germany), but (used to) have thin blond hair. So, while I also went to turkish barbers, I chose those who have many German customers.

Tl,dr: This isn’t necessarily based in rasism imo.