Here's what the Times said of the study, quoting the study itself: The study, published today in Science, finds that "self-reported population ancestry likely provides a suitable proxy for genetic ancestry." In other words, someone saying he is of European ancestry will have genetic similarities to other Europeans.
Yep--just like you said, the study did not say that genes follow geography. Fool--take a reading comprehension course at your local community college.
Two, "genetic ancestry" does not mean genes. You do not understand what they looked at. The markers are not genes.