Another reason could be jealousy. If Dark Naruto has certain unique abilities or powers that set him apart from the rest of the family, they may be jealous and rather than embrace him, they choose to ignore him. This would be a rather petty reason, but in the complex world of fanfiction, it's a possibility.
Dark Naruto might become more rebellious. He could start to distance himself further from his family and focus on building his own power. Maybe he'll find allies outside of his family who understand and support him.
It could also be due to differences in values. If Dark Naruto had different beliefs about power, friendship, or loyalty compared to his family, and they constantly clashed over these, it might lead to his hatred. For instance, if his family adhered strictly to Konoha's traditional values but he saw them as restrictive.
One possible reason could be that his newfound 'godlike' powers make his family feel estranged. They might not understand his sudden transformation and the magnitude of his power, which creates a sense of fear or discomfort, leading them to ignore him.
In the fanfiction, there could be a family curse or some sort of obligation that forces his family to keep their distance from Naruto. They might believe that by ignoring him, they are protecting him or the family as a whole. For instance, if there is a dark force targeting Naruto, they might think that acting as if they don't care will keep him safe from that threat.
One possible reason could be jealousy within the family. If Naruto is getting a lot of attention from others in the harem aspect, his family might feel jealous or threatened. They could then choose to ignore him as a way of expressing their discomfort.
One possible aspect could be that Naruto's family's neglect in this fanfiction might lead to his 'dark godlike' transformation. It could be a way for him to cope with the lack of love and support from his family. He might develop a more independent and self - reliant nature, relying only on his own power which grows to godlike levels.
One possible reason could be feeling neglected. Maybe his family was always preoccupied with other matters, like protecting the village, and didn't give him enough attention. So he grew to resent them.
One possible storyline could be Naruto running away from the village. Since his family ignores him, he might feel like there's no place for him there. He could then go on a journey to find a place where he is accepted. Another storyline could be Naruto becoming a sort of lone wolf within the village. He trains in secret, away from everyone, and emerges as a powerful but mysterious figure. He might also start to form alliances with outcasts in the village who also feel ignored.
Another reason might be related to Naruto's own insecurities. He might not believe that someone like Hinata could truly be interested in him. So, instead of facing the possibility of rejection or the complexity of a relationship, he simply ignores her and focuses on other aspects of his life like his ninja training and his friends.
One possible reason could be that Naruto has some special power or destiny that his family is afraid of. Maybe they think that being close to him will put them in danger. Another reason could be that there are some misunderstandings within the family. For example, Naruto might have been wrongly accused of something, and his family, without fully understanding the truth, starts to ignore him.