It is creepy...
But I remember reading “The Fountainhead” and being shocked by the rape turned romance of the protagonists. Eyew.
And I LOVE Ayn Rand. But that just bothered me a lot at the time.
There was quite a bit of controversy when General Hospital made a real couple out of Luke and Laura, since their “relationship” started with Luke purportedly raping Laura.
Took quite a bit of work for them to retcon that one.
Still, I’m trying to imagine the stupidity of someone (even a book character) who would argue that raping and murdering someone is helpful to prevent inbreeding.
The murder part kind of makes the whole “breeding” part moot.