Unfortunately it will probably only make a difference if those kids have a father that was a speedster in the NFL, a mother that was an athlete, and parents that stayed engaged in the game by doing camps and aggressively raising their kids to be high achievers.
More than likely this is correct. The pool of white NFL speedsters is low. Even if you are, everything has to fall into place as it has for McCaffrey. Father was a great NFL WR, mother was a college athlete, he got the genes, no injuries yet. So, figure those odds? Even with an NFL father, the odds are extraordinary!
Think about the odds for some one who has no connections, that has to first, be a High School RB, then have to be the very best in the State in which they're from, which is still no guarantee as everyone here knows my story, then get an opportunity in college, suffer no injuries and only, only if you're as good as McCaffrey will you get a shot at the NFL. With all the things CM accomplished, there were still doubters.
Think of those odds!!!
...and to Flints point, when I went through camps and combines with my son, I just didn't see many white parents with their kids in the skilled positions. He was generally the only white RB, maybe 2 white WR's and no white DB's.
...and if you are that white RB or WR, you better standout. Be the best at everything.
I've told this story several times, but I'll say it again. When at the Southeastern Regional Combine, Braxton Berrios was there and won the overall MVP amongst a sea of black WR's. That's how he got to Miami and now on the Patriots IR? He had to be the very best and again, that doesn't guarantee you anything!