OK, good. “Victim blaming” as a concept isn’t some recent feminazi plot to emasculate men in society (the origins go back further than that, have a read of Wikipedia for starters), it’s a reaction to the treatment of victims in the criminal justice system. For instance, women’s behaviour in the run up to and during incidents sexual violence is dragged up in court as a defence for the accused.
You both acknowledge that this is wrong. So what’s the problem?
Of course there are things that a vulnerable person can do to reduce the risk of sexual assault, but that’s a completely orthogonal issue to who is to blame for sexual violence. Who is to blame is the people who do it. Exactly those people, and nobody else. Sure, you can find people who will point out that since men and women are overwhelmingly the perpetrators and victims respectively of sexual violence, sexual violence is a problem with men, but what perplexes me is that a particular type of generally right-wing conservative snowflake finds this simple statement of fact offensive. Now you know how Muslims feel when you brand them all as women-hating psychopaths!