Right, but we also subsequently started paying attention to the "prominence / fame" variable. I'm not deeply steeped enough in domestic US soccer history to know all of the players you were referring to in the quoted post, but I'm guessing not all of them were well known. Like
Kangaroo Jack said, it's probably a little from both columns.
Anyway, my point was that intuitively and speaking from my own experience, it's hard to believe that it would have no effect whatsoever. And I suspect that the effect may be (understandably) invisible to people who don't have similar kinds of diasporic experiences.