Yeah, it's hard to know exactly what they meant by that comment, but it seems pretty presumptuous to judge whether someone's name "matches" their ethnicity for so many reasons, not the least of which is that there really isn't any way you should know for certain someone's ethnicity when they're applying at all! Asking about it in an interview is certainly illegal, and even in countries that are mostly homogeneous, there are going to be at least _some_ immigrants (maybe not for North Korea, but the entire premise of the article is that the applicants aren't claiming to be from North Korea in the first place)