> I'm troubled by the term itself, as it seems to consider our current culture in isolation rather than in relation to all other cultures. I think, largely due to the work done by previous feminists, our culture is considerably less accepting and enabling of rape and and man-woman violence than it used to be, and probably ever has been

I don't think the term is meant to mean that our whole culture is rape based. It means a specific cultural assumption by some groups within society that rape is on some level acceptable, or at least defensible.

In the same way that there can be said to be a 'gun culture' in parts of London or Manchester, for example...