I honestly think people who don't want these warnings made don't actually give two shits about rape victims and possibly even in some warped way want other women to get raped because it reinforces their world view. They just seem to see rape victims as collateral damage for their ideology
I sadly think you might be right. It makes me quite sad when I see this sort of thing on twitter, with every single suggestion of how women can avoid dangerous situations being met by the mantra of 'victim blaming'. When there are 2 women a week being murdered by their current or former partner, we know that men can be very, very dangerous indeed to women. In many countries and cultures, the rates of murder, assault and rape of women is much higher than in this country. Men are a threat. Yet, when people try to encourage self-preservation, it is immediately shut down with 'well, stop them raping'. HOW? What is your magic solution? And in the meantime, the victims are absolutely collateral. We get idiots like Lena Dunham etc who say women should be able to walk round naked and not get any hassle for it. That does not happen though, does it?
I have also seen women on twitter try to shut down initiatives telling teen girls not to send naked pictures by text. Saying things like 'it is NEVER your fault if the pictures get in the wrong hands'. No, it's not, but that doesn't stop the horror of all your classmates seeing them. Some teens have killed themselves over photos being spread around school.