I keep expecting to see a similar article about other groups. Back in the 90s there was an article by a mathematician (not a geneticist) that claimed everyone of English descent is (probably) no more than 30th cousins to everyone else of English descent, and everyone descended from pre-1850 American immigrants is (probably) about 13th cousins to everyone else.
http://news.yahoo.com/oy-vey-european-jews-30th-cousins-study-finds-154451884.html//cdn.embedly.com/widgets/platform.js