I don't think a distaste for reading about something indicates prejudice. I prefer reading about the actions etc. of whole people, not just their body parts.
A little explicit sex is fine, but not when it is the main focus of the story. A single body part should not be mentioned/described ad nauseum, and usually repetitively on every second page. Of course when I was young I would maybe have just loved it. Now it bores me and when there is pain, bestiality, molestation, coercion etc. involved it makes me feel a tad ill. I don't think this makes me prejudiced.
I also don't care for books that consist heavily of descriptions of the countryside, backstory, or long meandering diatribes on religion or politics etc.. Just me. But I don't think I am prejudiced against the countryside.
I don't want to watch pigs being slaughtered, humanely or not, but I don't think pig slaughterers are wrong or evil or anything bad at all. They probably grew up in a farm where it was just the way of things or need the cash and I am afraid I do like my pork chops on occasion.
I find the operation channel nauseating as well, but am pretty sure I am not prejudiced against surgeons etc.. Well maybe a little
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I do admit to having prejudices (prejudice against prejudiced people for one) and try my hardest to eradicate them, or at least ignore them by telling myself not to be an ass. Let him who is without prejudice cast the first stone.
Helen