Nothing is wrong with it. I was in no way being critical. But even in newer versions, where efforts are made to include more women (again, just as an example) you can actually see another bias at work, with criteria for significance stretched for the inclusion of women. Women's history does not have the documented weight of DWEM and it is actively searched for and re-created from the ashes so to speak. The bias is deliberate and purposeful, but bias nonetheless.
Or another simple example. I used to work on the Australian literature section of Wikipedia. More than once, someone removed an article about a particular contemporary author because of lack of significance. From a global perspective, the significance is negligible, yet from an Australian literary perspective the view is different. There is also a significant sci-fi/fantasy movement in Australian literature, which is (imo) is over-represented on Wiki. If I were editing a paper encyclopaedia on the subject, these works be relegated to an extended article on the genre, with only a couple of the major writers represented and few, if any, individual texts given their own article. I consider "literary" works to be of more cultural and historical significance, in spite of the larger popularity and reach of genre fiction. This doesn't make me wrong, but it is bias.