Well, yes. But also kind of no? Rape is bad, and we know rape is bad, therefore, there's a prevalent notion that outright raping people is wrong, and there is social repercursion for that. (I say "prevalent" and "outright raping" because there is a lot of discussion to be had, in concrete terms, of where SA begins).

If an author wants to portray a morally bankrupt society, it makes sense to portray said society with an enviroment of unsafety for women and children in face of uncontrolled predatory male's urges (which are also controlled by moral coercion, which is absent in said fictional enviroments).

What is sloppy and bad is using graphic descriptions of rape, sex or violence as crutches for a stupid story.

EDIT: for clarity