Some might say it because they feel that the official Harry Potter narrative is complete on its own. The story of Harry Potter in the books and movies is so rich and well - developed that fanfic seems like an extraneous addition. So, in this sense, Harry Potter, as the central figure of the official story, doesn't need to or care about fanfic.
Maybe it's a way of stating that the integrity of the original Harry Potter character is not influenced by fanfic. Since fanfic can sometimes deviate greatly from the original source, saying 'harry potter doesn't care fanfic' is like saying the original character remains untouched by these fan - created ideas. Fanfic often has different interpretations of characters, and this statement could be a way to uphold the original view of Harry Potter.
Maybe because they are a big fan of the original 'Harry Potter' series and are tired of seeing really bad fanfiction. They want to emphasize that the real 'Harry Potter' is much better than those poorly - made versions.
Maybe they just don't understand the real essence of Harry Potter. They might have only seen a small part of it or misinterpreted some of the more emotional or character - developing moments as signs of weakness, which is completely wrong.
One reason could be that they are a huge fan of the original books and movies and think that fanfic often takes things in the wrong direction. They might feel that the creativity in fanfic goes against what they love about the original Harry Potter, so they reject it completely with that statement.
Someone might say it if the fanfic contains really bad writing. Like if the grammar and spelling are atrocious, it can be a turn - off. Also, if the story is just plain boring or the characters are not well - developed.
Perhaps they don't fully understand the depth of the world - building. They might see all the magic and think it's just some random, crazy ideas thrown together like in a not - so - well - thought - out fanfic.
Perhaps they haven't fully understood the series. Some people might just skim through the books or movies and miss out on the depth. They could be focusing on just the surface elements like the magic spells and not realizing the complex relationships and themes beneath.
Perhaps they've come across some really strange fan - created stories. Some fanfictions can be very out there with their interpretations of the wizarding world.
It might also suggest that the Harry Potter franchise, in an official capacity, doesn't really take into account fanfic. The official Harry Potter universe has its own set of stories, lore, and development. Fanfic is a separate realm created by fans for their own enjoyment. So, it's like Harry Potter, representing the official brand, is indifferent to fanfic because it exists in a different sphere of creativity.
Maybe they want to emphasize the purity of the original 'Harry Potter' story. They don't want it to be confused with the many fan - made stories out there.
One reason could be that they feel the official Harry Potter story has a defined end, and the fighting in fanfiction is just over - done. They want to focus on the original tale's conclusion.