If you're looking at the population as a whole, and you see that black people are the vast majority of RBs in the NFL, of course that's not racist. That's a fact.
The problem is when you take that statement and apply it in reverse and say a guy is or isn't going to succeed solely on his skin color. THAT is the racist component and no, I don't agree with that. If the guy puts up the college production, if he puts up the combine numbers, and he has the skills to play the position, his skin color is 100%, completely and utterly irrelevant. McCaffrey has defied the odds by getting to where he is when you look at population numbers.
But he's there now and I think it's complete fallacy to apply that kind of thinking to an individual when every checkbox is checked except his skin color. The reason you don't see many white guys in the NFL at that position is because they don't check the necessary checkboxes, not just because they are white.
And you don't need a white RB to be successful for an entire career to prove that. If a RB can't succeed just because he's white, then he can't finish with 300 points at the RB position just because it was some crazy fluke. And the fact that he's likely going to be drafted very high means an NFL team thinks the same.
For the record, I'm not accusing you or anyone else of being "racist" in the sense of the word that we normally ascribe to it. But this thought process is certainly a form of it and I'm a little surprised that some of you ascribe to it.