This I really don't understand. All it takes is a simple Google search about "what can I expect in a software interview?" and you'll see right away the importance of whiteboard interviews for so many companies, especially when you are coming out of college. I don't how true the quote actually is, but for anyone, regardless of race, I feel like this is just basic due diligence if you want a job.
I've barely been to any career events at my school, and professors never mention about whiteboard interviews. My friends in CS don't discuss this either. I just learned right away when I did some basic research on job searching.