Maybe Naruto sees Sasuke as a strong and unique male character. Changing Sasuke into a female in fanfiction might go against his perception of their relationship and Sasuke's true identity. It could also be that he feels it's disrespectful to Sasuke's character development as a male ninja.
Well, it could be that in certain fanfics, the writers want to create a more complex and angsty story. Sasuke's character is often seen as a brooding and driven one. So, they make him hate Sakura perhaps because they think it adds an interesting dynamic. For example, if Sakura is constantly trying to get close to him but he hates her, it can lead to a lot of conflict and emotional turmoil in the story.
In some fanfiction, Sakura might hate Sasuke because of his actions towards her. For example, he may have continuously rejected her advances coldly. This could lead to her developing feelings of hatred as her love is not reciprocated and instead met with indifference or rudeness.
Another aspect could be related to past traumas. Naruto has been through a lot, and if the Konoha 11, even unintentionally, reminded him of some of the negative experiences he had in Konoha, like the ostracism he faced as a child, it could make him hate them in the fanfiction.
In some fanfiction, Naruto might be depicted as hating toads because the author wants to explore an alternative personality or backstory for him. Maybe they want to show a more rebellious side of Naruto who resents the toads for their role in his training or for the demands they place on him.
One reason could be that Minato values the original narrative and the way his story was intended to be told. Fanfiction can sometimes introduce elements that he might find inappropriate or not in line with the values and themes of the Naruto world. For example, some fanfictions might create overly dramatic or out - of - character scenarios for him, which he would not approve of.
In fanfiction, Naruto could hate Sakura due to her treatment of him. She often overlooked his feelings in the original series. Fanfic authors might exaggerate this aspect. For example, if Sakura continuously dismisses Naruto's achievements or makes him feel inferior, it can build up to a strong dislike or hatred in the fan - created stories. Also, some fanfictions might explore a darker side of Naruto where his pent - up emotions turn into hatred for Sakura, perhaps as a way to show his growth into a more complex character with a wider range of emotions than just the positive ones shown in the original anime.
It could be that in the fanfiction, there are made - up events that lead Naruto to hate Minato. For instance, if there is a plot where Minato was thought to have some dark secrets that affected Naruto's life badly, like being involved in some sort of conspiracy against Naruto without his knowledge. This would give a reason for Naruto to hate him.
Some fanfictions might portray Naruto hating Team 7 because of a clash of ideals. Naruto has his own beliefs and goals, and if the other members of Team 7 constantly oppose or undermine those in the fanfic, it could cause him to develop a dislike and eventually hatred towards them. Also, if there are issues with power dynamics within the team, like if Naruto feels overpowered or bullied by the others, that could contribute to his hatred as well.