> Also there should be a high correlation between kids being college-material and parents being college-material. Whether you believe in nature (genetics) or nurture (good parenting, high standards, role model, access to education, etc), or a mix of both, either way, you should not expect the % of college students from graduate families to match the % of graduate families in the country. So not sure what point the article makes

Just because something can easily be explained using logic doesn't mean that it's outcomes can't be negative. Perhaps this indicates that our society is further stratifying into different classes and upward mobility is being reduced for a portion of the population which I think most people would agree is a bad thing