This win is indeed impressive. Some would say she had advantages (off the track) others didn't have. I would argue that the detriments of being in a male dominated sport...and let's face it, we, by and large, are egotistical and territorial, would outweigh whatever advantages she had. However, each succeeding generation of women in this sport will have less and less of those non-racing issues to deal with, and that is a very good thing.
That principle goes for any minority entrant (of any kind) into a field dominated by a majority of some kind. The first to break in have struggles only they truly can appreciate (not fair, not just, but reality), but when they achieve by struggling through those issues, their followers in that pursuit have less of those biases to deal with- hopefully eliminating the irrelevant and extraneous issues at some point.