To me, even though the PV is clearly about the girls out on the prowl (I wouldn't say all of them were being portrayed as prostitutes, if anything I felt only Atsuko was clearly portrayed that way), it was also about them being in control. Well, Atsuko not so much, but even at the end, her little smile, was kind of a give away. It's not a PV a lot of people are going to like, but at the same time I don't think it's as bad as a lot of people make it out to be.
To each their own, of course, but I think it's a fantastic PV and it's not something that should be ignored, especially in Japan.