Because feminists like Hillary Clinton who resembles Vashti being the wife of the leader of a superpower (although obviously, Bill Clinton no longer holds the job, so the comparison is not perfect ) and they don't like the results of the Persian King's decree, some feminists are tempted to whitewash Vashti to make her into a martyr for feminism.
However, Vashti did not refuse the King's order for the sake of feminism.
She was just caught in a moment of shame, as a Divine punishment for shaming Jewish women on Shabbat, the 7th day of the week.