Most likely this is a shift in social politeness while patriarchal structure is firmly intact. Racist slurs are not used in "polite company" anymore, while culture and power remains overwhelmingly white supremacist. It's likely a superficial shift away from rape and rape jokes being funny in polite company.
Let's acknowledge our victories, no matter how small. (Maybe someday soon we could watch a TV show or movie without the protagonist raping someone or making sympathetic jokes about rape!) Keep fighting. Patriarchy needs rape culture, one does not exist without the other. While rape may be newly cast as impolite, patriarchy will ensure it remains a tool for oppression.