This quote from his essay makes it clear that he isn't a dogmatic adherent to this principle. Instead, it's a productive default way of approaching a situation.
He's not saying to let everyone out of jail. But you knew that.
For a woman assaulted while they were wearing sexy clothes, well, is there much evidence that you're actually in more danger when you do that? Even if a woman makes herself some iota safer by dressing down, wouldn't that make things an iota worse for every other woman out there who might want to decide differently.
Just because you can prevent a failure by making different choices doesn't necessarily mean that you should. I might be able to protect myself from betrayal by never trusting anyone, from hear-break by never loving, but that doesn't make either of those the right decision.