Maybe he has been betrayed too many times in the past. For example, in the original story, some so - called friends or allies might have let him down, and this experience makes him overly cautious in the fanfiction.
I think it's not that common. Most fanfictions tend to follow the general traits of the characters from the original books. Since Harry is known for his loyalty and care for his friends, a fanfiction where he doesn't care about anyone is quite the opposite. However, it could be an interesting concept for some authors who want to break the mold and create something new and thought - provoking.
His lack of trust would surely strain his friendships. His friends might feel hurt and rejected by his constant suspicion. For example, Hermione, who has always been loyal to him, might be deeply disappointed if Harry doesn't trust her.
Well, Harry Potter has his own real and complex life. He has grown up in a difficult situation, facing challenges and traumas. Fanfiction is a concept from our world, outside of his own experiences. He's more concerned with the things that directly impact him, like the Triwizard Tournament, his relationship with Dumbledore, and the mystery of his parents' death. Fanfiction doesn't have a place in his immediate concerns. He's constantly in a battle against the forces of evil, and that takes up all his attention.
Well, it's hard to say for sure. Since the concept of fanfiction is something that exists outside the main story. Harry Potter within the official story is occupied with his own adventures like fighting Death Eaters and saving the wizarding world. He probably has no idea what fanfiction is, let alone care about it.
One reason could be the author wants to create a unique and edgy story. By making Harry Potter not care about anyone, it's a complete subversion of the well - loved character. It grabs readers' attention.
Well, in the original series, Harry Potter is a very caring person. He cares about his friends like Ron and Hermione deeply. He also cares about the fate of the wizarding world. But in this fanfiction, it's a complete departure. Maybe the author wants to explore a different side of Harry, like if he had been through some really tough experiences that made him seem uncaring. But it goes against what we know of his core character.
The fanfiction changes the relationship dynamics within the Naruto world. Usually, Konoha is at the center of Naruto's universe. But now, with Naruto not caring about it, other elements like his personal relationships outside Konoha or his own self - discovery become more prominent. It shifts the focus from the village - centered story to a more individual - centered one.