You're missing the point , to say the least. Douglas coaches in a sport that is 95 % white (in this country). The reason he proffers this particular argument is that just arguing that "white" people are hurt by these quotas is insufficiently persuasive in influencing those "other" people (ie compassionate leftists, etc). But hes showing clearly that if you put in place broad quotas, you end up screwing the type of person it really is suppose to help.
Listen, Ive been following this controversy for 10 years, while Wrestling and other sports have been near decimated (cut by more than half, even though they are the cheapest sports to have). Any and all arguments at this point are valid. The hypocrisy and greed of the other side is unbelievable and needs to be stated over and over again.