I don't think there is a misrepresentation of Gender, as Brandon was clearly masculine.  However, there is a misrepresentation of Sex, she was a female.  The words he and she are based upon sex (anatomically determined) and not based on gender (characteristics that a society or culture delineates as masculine or feminine).  I think the reader will be confused by the story of a person if the words he and she are used in the context currently used.  I think the use of she and hers throughout the articl is done only to make a social statement.  This only adds confusion to the facts.  Wikipedia should represents facts and not opinion.