1) Power imbalance exists in general between men and women, in favor of men

2) Rapists and society at large often blame rape victims for not resisting enough. Rapists do not have a problem with a lack of consent and relying on victims to stop their own assault is completely unacceptable. The kickstarter project in question advocated for physically violating actions to be undertaken by would-be assaulters and put the burden of stopping assault on victims and should this kind of thing should never be supported period.