Not true at all. We are told from the time we basically get our periods that we're going to be targeted and we need to do x, y and z. From family, friends, teachers, administrations. However for a long time (a lot of college campuses are actually doing their part) there was no such movement towards young men to secure consent. There has long been the idea that rape is bad but those women wearing "slutty" clothing, imbibing alcohol or even being alone with a guy she knows is interested is communicating a "yes," so venture forth. If she cries about it later, it's really just her feeling shame, as she should.
Without explicitly informing men this is wrong and society essentially washing the hands of the rapist via slut shaming, victim blaming and even certain kinds of jokes there has been a tacit acceptance of the act as inevitable and her fault. The rape is an inevitable consequence for a woman who didn't play by the rules. Society was failed women and then blamed them for the acts of people who operate under the idea that they're entitled to sex from women because that's what they are essentially taught. And without the proper authority figures to tell them otherwise, why wouldn't they.