Well, perhaps in the fanfiction there is a power struggle within the alliance. Harry, being a central figure, might not want to be part of a group where there is constant jockeying for power. Also, new revelations about the alliance's past actions or connections could make Harry want to distance himself. For instance, if he finds out the alliance has some shady dealings with dark wizards in the past, he would surely break the alliance to protect his own integrity and that of his true friends.
It could also be related to his relationships. Perhaps he has an argument with Hermione or Ron, or he's having trouble in his love life. Fanfiction often explores the characters' emotional sides, and relationship problems are a common source of distress. So, walking on the street, these thoughts might flood his mind and lead to his breakdown.
One possible consequence could be that Harry becomes an outcast in the wizarding world. Family alliances often carry a lot of political and social weight, so by breaking them, he might lose the support and protection that these alliances offer. For example, if he breaks an alliance with a powerful pure - blood family, other pure - bloods might shun him.
Harry's character development often involves self - discovery. In fanfiction, he may find out that he has a different destiny or purpose than what the alliance has in mind for him. This new understanding of himself can make him break the alliance. Also, as he becomes more confident in his own leadership skills, he might not want to be part of an alliance where he is not given enough authority or respect. His growth from a naive boy to a more experienced and self - assured wizard can prompt him to sever ties with alliances that no longer serve his needs or values.
In some fanfictions, dark magic interference might cause a wand to explode. If a dark wizard tries to curse a wand or disrupt its magic, it could lead to a catastrophic failure. This could be part of a plot where a hero's wand is targeted by an enemy.
Perhaps they've received some negative feedback related to certain fanfictions that crossed the line in terms of content or ethics. So, in order to safeguard the reputation of the Harry Potter brand, they've decided to put an end to fanfiction. This would ensure that the official image of Harry Potter remains intact and positive.
It's possible that he hates it because in fanfiction, his friends and he himself might be portrayed in ways that are completely different from who they really are. For example, Hermione might be made into a silly character instead of the intelligent and brave witch she is. This distortion of the people he cares about could be a big factor.
Perhaps he likes to see how fans re - imagine his character. He might be curious about how others view his actions and motives throughout the story.
Perhaps in this fanfiction, the author has imagined a completely different backstory for Harry. Maybe he was somehow mistreated by humans in this alternate story from a very young age. This continuous abuse or neglect could lead to him hating humans. But in the official Potterverse, Harry is a symbol of love and hope and friendship among humans, so this is a huge deviation. It could also be that the writer is exploring some complex psychological concepts by making Harry hate humans, like the effect of long - term isolation or extreme trauma on a person's view of humanity.
One possible reason could be Harry's fear for Ginny's safety. In the wizarding world, he has so many enemies, and he might think that being with him puts Ginny in constant danger. Another reason could be his own insecurities. Maybe he feels he's not good enough for her despite all his achievements. He might also be so focused on his fight against dark forces that he believes he can't give Ginny the time and attention she deserves.
Perhaps in the fanfiction, Edward breaks up with Harry due to a lack of communication. They might have busy lives and gradually stop sharing their thoughts and feelings with each other. As a result, small issues build up over time and create a rift between them. Or it could be that Edward has fallen out of love. Love can be fickle, and he might have met someone else who makes him feel more alive and attracted, causing him to end things with Harry.