I'm not sure if there is such a specific 'Harry Potter Kills with a Knife' fanfic. There are countless fanfics out there, and some might have very unusual or dark concepts like this, but it's not a common or well - known one in the mainstream Harry Potter fanfic world.
It could potentially mean that in some sort of extreme or alternate take on the Harry Potter universe, the character Harry Potter is involved in actions that put an end to fan - created fictional works. Maybe it implies that his actions in a particular story disrupt the fanfic narrative in a very drastic way.
On the other hand, it could also start some interesting discussions within the fandom. It might make fans think about the darker aspects of the wizarding world that were not fully explored in the original books. For example, how much pressure can a young wizard like Harry actually bear? However, it also has the potential to make some fans feel uncomfortable or even depressed, especially those who are more attached to the positive and heroic image of Harry.
It would be a very dark and unorthodox take on the Harry Potter universe. Harry is not typically associated with using a knife as a weapon in the original series. So, it would likely involve a major deviation from his character as we know it.
One possible reason could be extreme despair. Maybe in that fanfic's alternate universe, Harry has lost all his friends and loved ones in a very tragic way, like a second wizarding war that was far more brutal and unforgiving. He might see no way out of the emotional pain and thus choose to end his own life.
It could be a wild and imaginative story. Harry, with his Gryffindor courage, might face off against a Satan - like entity that has somehow invaded the wizarding world. He could use his spells and the help of his friends, like Hermione's vast knowledge and Ron's loyalty, to combat this ultimate evil.
It's most likely just a concept. There's no real - world event where Harry Potter as a character actually kills fanfic. It's more of an idea about how the official Harry Potter material could potentially impact fan - made stories.
In the original series, Harry doesn't kill Umbridge. So this fanfic takes a very different turn right there. In the original, Umbridge is eventually removed from Hogwarts in a more traditional way, through the combined efforts of the students and the return of Dumbledore. But in the fanfic, Harry taking her life is a huge deviation from the non - violent and more rule - abiding nature of the main character in the original series.
It is a rather controversial theme. In the Harry Potter fandom, Harry is a beloved main character. Having Draco kill him goes against the general heroic narrative and the idea of good triumphing over evil that is prevalent in the original series. Most fans prefer fanfics that stay true to the spirit of the books, where Harry is the hero and Draco is more of an antagonist who may reform, not a murderer.
Well, it completely flips the dynamic. In the original series, Snape was a complex character with a lot of hidden motives that were ultimately revealed to be on the side of good. If Harry kills Snape in the fanfic, it makes Harry seem more impulsive and less of the heroic figure we know. It also undermines the redemption arc that Snape had in the original story.