I never got not listening or liking a song specifically because of the topic, unless it's directly supporting said crime/immoral act, whatever it may be. It's kind of the point, to put you on edge and unease. That seems to be a staple of Opeth, no? At least in their overall vibe and overall thematic nature of their albums. They don't sing about the happiest of stuff and their music itself isn't very joyful. I suppose I'm just not focusing on it; but the part I don't get is it isn't advocating rape or 'singing' (as in praising) it. It's the topic of the song's story, that's all.
Eh! I love the song. I could see if it were very lyrically and vocally focused but as it is you've really gotta try to hone in on what he's saying. Even so I suppose if you know what he's saying that's all you need. Then again some of my favorite songs are about the darkest aspects of humanity and is in my opinion how some songs become so power and emotional. I think Wilson said it best when describing how he uses music as an outlet and how that outpouring of emotion is, many times, because of something dark and negative.
I'm also probably highly desensitized at this point (hell...who isn't these days..) and after hearing Wilson's version of The Piano Lesson (literally the only song that while I don't actively not listen to it, I don't play quite as much as I would if it weren't sung from the pedophile's perspective), nothing really surprises me in terms of content in songs. Once you realize that, again, unless it's obvious that the song is advocating said act, there's usually a point to be made; I'm quite certain Akerfeldt's wasn't 'yay rape'. I know no one thinks that, but when seen in that light, at least in my eyes, it's not bad, simply 'is'. Which...may very well be apart of the song's theme. It's something that happens in the world whether anyone wants to admit it or not, and who knows, may have been apart of Akerfeldt's life, indirect or direct. Still not too great a though, I know...