I researched a bit... I'm not sure, it sounds like there were a lot of elements to this. First, she was evidently gang-raped (not staged, an actual rape) when she was young + before she went into pornography. Second, she seemed to be expecting to get paid for this movie (the gangbang one), and wasn't. (She expected to get $10,000.) That removes some of the agency, for me. (That is, it becomes less about what statement she wanted to make and more about the money she wanted to make. She evidently went into porn in the first place because her parents wouldn't pay for her education.)
She also seems to have backed away from pornography in general.
To me, from what little I know, it sounds like she may have been putting a spin on something to ease her own mind about earning money in this way. I get some of the performance art aspect of it, but I don't think this does a lot to really "liberate [anyone] from the notion that women are passive." It also sounds like it may have been part of the way she processed the rape she experienced.