If anyone who knows what's going on is ever amazed she won it's because she was actually an underdog in the specific matchup, not because she's a female, let alone for being a "foreigner" (non-Korean). In fact, the amount of amazement for being a foreigner winning was pretty low by the time of the match the article writes about. I remember watching the game mentioned here last thanksgiving, and it coming down to the wire, and the audience didn't care that Scarlett was "a token female" or anything, we were just excited about the awesome match and that Scarlett pulled a miracle win. The casters were no different, all eye-popping was purely about the awesome decision making and creativity leading to an excellent game.
Don't make the gaming community sound more sexist than it already does on its own. Scarlett may have faced difficulties or felt singled out in the past for it, but it certainly wasn't true in the fashion depicted in this article.