I have to disagree that "in most cases" a dislike of made-up names is veiled racism. There are all kinds of made-up names that I don't think are associated with any one race, like Cheryl or Kaelynn. And actually, I wouldn't expect a Genesis or a Destinee to be any particular race, either.
Also, I acknowledge that all names were made up at some point...but there's a big difference between a name like Emily, with centuries of history enriching it, and something that just got invented in the past 10 years.