Well, in fanfics, sometimes authors like to take a completely different approach to characters' relationships. In the case of Naruto hating Kushina, it could be related to a power struggle within the fanfic's plot. Maybe Kushina has some power that Naruto feels threatened by, or there are political or family reasons within the made - up world of the fanfic that cause this animosity. It's all about exploring new and unexpected ideas in the world of fanfiction.
In some fanfics, Naruto might be made to hate Minato and Kushina due to a sense of abandonment. If the story is written in a way that emphasizes how Naruto grew up alone and suffering, he could project his anger onto his parents for not being there for him. For example, he might think that if they were alive, he wouldn't have had to endure the taunts and loneliness in the village.
It could be that she values the authenticity of the original Naruto story. Fanfictions often introduce all kinds of wild ideas and concepts that she might find disrespectful to the carefully crafted world of Naruto. For example, some fanfictions might change the relationships between characters in a way that goes against her understanding of the Naruto universe.
One possible reason could be a miscommunication in the fanfiction. Maybe some secrets were kept from Naruto about his parents that made him feel betrayed when he found out, thus leading to hatred.
In the fanfic, Naruto could hate Team 7 because of a change in the story's plot. Perhaps something bad happened that he blames on the team. It might be that the team made a decision that Naruto strongly disagreed with, like a mission choice or how they treated an enemy. This could cause his feelings towards them to turn sour.
In some fanfics, Naruto might hate Tsunade due to her decisions regarding the village. For example, if she makes choices that Naruto believes put the younger generation at risk or if she is too strict with the shinobi training policies. Naruto, being someone who values his friends and the future of the village, could grow to dislike her.
Maybe in the fanfic, Kurenai has some actions that conflict with Naruto's beliefs. For example, she might oppose Naruto's way of handling certain village matters.
Maybe he just doesn't like the way some fanfirls act in the fanfic. They might be too obsessive or change his character in ways he wouldn't like.
In some fanfics, Naruto might be made to hate the village because of how he was treated as a child. He was ostracized and shunned by many villagers due to the Nine - Tails sealed within him. This constant rejection could build up resentment over time in a fanfic - based scenario.
In some fanfics, Naruto might seem to 'hate' family due to various reasons. Maybe the author wants to explore a different side of his character. For example, if the fanfic has a plot where his family has wronged him in some way, like his father not being there for him during his difficult childhood. However, this is not the typical view of Naruto in the original series, where family is something he longs for.
In some fanfics, Naruto might be made to hate Kami due to a misinterpretation of Kami's role. Maybe the author wants to create a new narrative where Naruto rebels against the traditional concept of Kami in the Naruto universe.