One possible reason could be jealousy. Maybe in the fanfiction, Naruto feels overshadowed by Sasuke in Sakura's eyes, which leads to his hatred. Another reason might be that he perceives their relationship as a threat to his own bonds with them. For example, he could think that Sasuke and Sakura's closeness excludes him in some way.
I'm not sure. Fanfiction can be very subjective. Some might find it interesting as it offers a different take on the characters' relationship, but it also goes against the more common portrayal of their bond in the original series.
One possibility for such a fanfic is that Naruto has been through some kind of trauma that makes him view Sasuke and Sakura differently. For example, if Naruto was betrayed by someone he trusted deeply who had similarities to Sasuke and Sakura in some aspects. It could change his perception of them completely and fuel his hatred in the fanfic.
One possible reason could be a misunderstanding. Maybe Naruto misinterprets some of Sasuke and Sakura's actions as being against him or the village. For example, Sasuke's quest for power might seem like a threat to Naruto, and he could misread Sakura's loyalty to Sasuke as a form of betrayal to their friendship.
Well, it completely flips the relationships. In the original story, Naruto considers Sasuke his friend and rival, and he has a positive if a bit complicated relationship with Sakura. In this fanfiction, the hatred would create a lot of tension. Instead of team 7 working together, they would be at odds.
In the original Naruto story, Naruto has deep friendships with both Sakura and Sasuke. He loves Sakura in a pure way and is constantly trying to bring Sasuke back to the village. In the fanfiction where he hates them, it completely flips his character's fundamental relationships. It goes against the essence of his character development, which was based on his bonds with them.
In such a fanfic, one possible reason could be Naruto's feeling of being left out. Maybe he sees Sakura's constant focus on Sasuke and feels neglected in their friendship triangle. Another reason might be jealousy. If Naruto has unrequited feelings for Sakura, seeing her love for Sasuke could turn to hatred over time.
The relationship would become very tense. Naruto would likely avoid Sakura and Sasuke. There would be no more of the friendly banter or the complex emotional triangle that was there before. It's a complete shift from their normal relationships in the original story.
Well, these types of fanfictions can create a one - sided view. The original Naruto series shows a multi - faceted relationship between Sasuke and Sakura. However, the 'sasuke hates sakura fanfiction' might overemphasize the negative side. This can cause fans to have a skewed view of the characters' personalities and the overall story. They might not see the subtleties in Sasuke's behavior towards Sakura in the original, like the times he showed a glimmer of care despite his aloofness.
One reason could be that in some fanfiction, the characterizations of Sasuke and Sakura might be off. Maybe Sasuke is portrayed as overly cruel to Sakura in a way that doesn't seem true to his character in the original series. Another reason could be that the storylines in these fanfictions are too clichéd, like always having Sasuke constantly reject Sakura in the same uninteresting ways.