One possible reason could be a misunderstanding. Maybe some false information was spread about his mother, making Naruto believe she had abandoned him. Another reason could be related to the secrecy around his mother. If he grew up feeling alone and not knowing about her, he might develop resentment.
It could be that the 'mother love' in the fanfiction goes against Naruto's own ideals or his perception of family. Naruto grew up without his parents, and if the fanfiction presents a mother love that is forced or not in tune with his experiences, he might hate it. He has his own understanding of love and family through his friends and the village, and this fanfiction concept could be a jarring deviation from that.
In some fanfictions, Naruto might be made to hate his mother because of a misinterpreted prophecy or a false belief that she abandoned him. Maybe the author wants to create a more complex and angsty story line for Naruto.
This fanfiction changes the emotional core of Naruto's journey. His growth in the original was often tied to his connection with his parents' legacy. Here, it becomes about overcoming his hatred for his mother. It also affects his relationships with others. For example, how he interacts with characters like Jiraiya who knew his mother might be very different.
In fanfiction, Naruto might show his love for his mother through his memories. He could constantly recall the little time he had with her. For example, he might remember any advice or lullabies she gave him. These memories could fuel his actions, like when he faces difficulties, he might think about how his mother would want him to be strong and persevere.
Maybe in some love fanfictions, the writers distort the original family relationships in Naruto's story. They might create untrue or negative scenarios about his family, which makes Naruto seem to 'hate' his family in those fictional settings.
Typically, Naruto is known for his deep love and loyalty towards his friends. Fanfiction that has Naruto hating his friends is probably a deviation from the traditional understanding of the character. It might be used to explore some extreme scenarios, like if he was under some sort of mind control or if there was a huge misunderstanding. But in the mainstream Naruto - themed fanfiction, this is not a common occurrence.
In some fanfictions, Naruto might be depicted as hating his parents. However, this is a departure from the canon. In the original Naruto story, Naruto grows to understand and respect his parents as he learns about their sacrifices. But in fanfiction, authors can take creative liberties and explore different emotional states for Naruto towards his parents, such as hatred perhaps born out of feeling abandoned, even if it goes against the essence of the original story.
Some fanfictions like to take a non - traditional approach. Naruto may hate his mom because the fanfic writer is trying to show how a character can be shaped by false perceptions. For example, if the mom was from a different clan that had some bad blood with the Hidden Leaf, and Naruto hears only one - sided stories, he could develop hatred. Also, it could be a way to explore the theme of forgiveness later on in the story, where Naruto has to overcome this false hatred when he discovers the truth.
A possible reason could be jealousy. If Naruto had a sibling who was always favored by their parents, he might grow to hate his family. He would feel like he was always in the shadow of his sibling and that his family didn't care about him as much.