If you think the Killing Stalking fandom should kill themselves or support rape and abusive relationships just because they read a manga about. Then, by following that “logic”, The Hannibal fandom supports cannibalism. The walking dead fandom wants to see the world burn. Fans of Nightmare on elms street support serial killers. Supernatural fans are full of blasphemy or are super religous.
What happens in fiction does not represent the fans morals and thoughts.