What could be the reasons for Harry not arriving at Hogwarts in fanfiction?

One reason could be that he doesn't like others taking creative liberties with his story. He might feel that it's his story and only the original version should be the 'true' one.

One reason could be that he's being hidden by some powerful magic from a group that wants to use him for dark purposes. Maybe there are dark wizards who know of his future importance and want to either kill or control him, so a good wizard has made him disappear.

One reason could be to search for a powerful magical artifact outside of Hogwarts that they believe is crucial for defeating a new dark threat. In fanfiction, they might feel that Hogwarts has become too dangerous or restricted in terms of resources for their mission.

Maybe he leaves because of a conflict with the Hogwarts staff. If the new headmaster or some teachers start implementing rules that Harry believes are wrong or unfair, like restrictions on defensive magic classes, he might decide to leave in protest.

One reason could be that he has fallen in love with someone outside of Hogwarts and wants to stay with that person instead. He may feel that Hogwarts will keep him away from his beloved.

In fanfiction, the author might want to explore a different side of Harry. He could be berating Hogwarts education because he realizes that some students were left behind. There were students like Neville who didn't really shine until later, and Harry might think that the school system should have been more inclusive and better at nurturing all types of magic abilities from the start.

One reason could be that it doesn't stay true to the original lore. For example, if the fanfiction changes the fundamental rules of magic in Hogwarts that were established in the original series. Another reason might be that the characters' personalities are distorted. Harry Potter is known for his courage and self - sacrifice, and if the fanfiction turns him into a cowardly or self - centered character, it could be rejected.

Perhaps he has seen a dark future for Hogwarts in a vision. He might think that by staying away, he can avoid that future or protect himself from some unknown danger. In fanfiction, there are often new and creative plotlines like this.

Well, perhaps in the fanfiction, Harry has a vision of a different future for himself that doesn't involve traditional Hogwarts education. He might have seen a path where he can make a greater impact on the wizarding world without the constraints of school. It could also be that he's being influenced by a new character in the fanfiction, someone who convinces him that there are better ways to develop his magic and knowledge outside of Hogwarts. This new influence could be from a different magical culture or a rogue wizard with unique ideas.

One possible reason could be that he was under the influence of a powerful dark magic or a curse that made him lose control. Another reason might be that he was tricked into believing Hogwarts was a threat to the wizarding world in some extreme way. Maybe a powerful enemy manipulated him to think that destroying Hogwarts was the only way to save everyone.