As I have said elsewhere, the terminology is relevant because it is the terminology of the disciplines that deal with this stuff. I can accept that people will want to talk about this stuff without knowing anything about it at first - that makes sense, and without already knowing that it has already been studied how would they know? When people learn that there is actually a prior literature and well developed disciplines that deal with this stuff however, then deliberately turning their back on even the most basic part of the literature and the discipline when there are people who are literally explaining it in front of them is rank anti-intellectualism worthy only of contempt and scorn.

When looking at issues of gender in history, modern history does use the language of privilege - ie sexism might be talked about as manifest in terms of what records or history is recorded and treated as important by the people who are being studied. When discussing issues of gender, modern Philosophy has to deal with system level analysis - hence the use of ideas of systemic sexual discrimination as sexism. Recent sociologists seem to non-controversially use this terminology also.