I think having this issue raised on occasion within your own comfort zone is precisely the shock value the issue requires.
Rape as a theme isn't exactly saturated within the bounds of 40k, just vaguely hinted towards in slaaneshi and dark eldar lore.
Having one instance like this crop up every now and then I feel is a good thing. It ensures we don't forget, we don't just brush it aside. But it doesn't dominate this hobby or others by any means.
Nonsense is our Salvation