There IS a difference between reality and fantasy. We see it all the time.
There is an actual fetish for consesual non consent aka rape fantasy/roleplay. If we allow that people routinely engage in fake rape, then why are you surprised if anything else is sexualized. People are weird.
But is it not just as disturbing to you when people glorify violence and gore such as the Saw franchise?
I do not understand the attraction to these things either, but I dont think its healthy to pretend that reality and fantasy cant be separated.