Matt:
Perhaps the statistics for you hometown don't match your expectations. Those stated for the Dallas area are right on target. Regardless, I have read similar articles over the past several years based on research done by various reputable organizations.
I've been watching this happen for a very long time where I live. Before you nay say the man's work you might want to bone up on several books in the fields of urban planning and cultural criticism. The trends in this country might just surprise you.
Aaron