On one hand, it could potentially lead to more in - depth discussions about the darker aspects of the show and how to handle such themes in fan creations. But on the other hand, it might drive away some fans who just want to enjoy the positive aspects of the Supernatural universe. It also might give the wrong impression to outsiders about what the fandom is all about, especially if they see a lot of this type of disturbing fanfiction being popular.
The potential impacts are complex. It could inspire some fans to explore the psychological aspects of the characters more deeply, but at the same time, it can cause distress to those who are sensitive to themes of abuse. In a fandom that is supposed to be a place for fans to come together and celebrate the show, this type of fanfiction might create a rift between different groups of fans. For example, those who enjoy it for its shock value and those who believe it's inappropriate and goes against the spirit of the show.