Another reason could be in a fan - created scenario where there are secrets involved. Hinata might be keeping a secret from Naruto that, when revealed, makes Naruto feel betrayed or deceived. This sense of betrayal could easily turn into anger. For instance, if Hinata has a connection to an enemy that she's been hiding from Naruto.
One possible reason could be misrepresentation of her character. In some fanfictions, authors might change her personality to fit a certain plot, like making her overly jealous or mean, which would be out of character for the gentle Hinata. This could make her seem unlikable and thus anger fans who love the original Hinata.
It can create division. Some fans might defend the fanfiction, saying it's a creative interpretation, while those who are angry about Hinata's portrayal might oppose it strongly. This can lead to arguments and a split in the community.
One event could be if Hinata is forced by her family to make a decision that goes against Naruto's wishes. For example, if her family arranges a marriage for her with someone else, Naruto might be angry at her for not standing up to them. He values freedom and choice, and if he thinks Hinata is giving in too easily, it could make him angry.
Maybe in the fanfiction, Naruto has made some decisions that go against Hinata's beliefs or values. Suppose Naruto decides to use a very dangerous and unethical jutsu for power, and Hinata, who is usually very moral, might start to hate him for that.
One possible reason could be for the sake of creating a more complex love triangle in fanfiction. Maybe the writer wants to explore a different dynamic where Naruto and Hinata's relationship is strengthened by having a common dislike for Sakura. It could also be that the fanfiction writer is trying to give Hinata more agency and make her a stronger character by having her oppose Sakura in some way, perhaps in matters related to Naruto's affections.
One possible reason could be if Sakura constantly criticizes Naruto's abilities in a very harsh way. In the story, Naruto has always been striving to prove himself, and if Sakura doesn't show any faith in him, it might make him angry.
Some people create such fanfiction maybe because they like to explore alternative or dark storylines. They might think it's interesting to deviate from the canon relationship between Naruto and Hinata.
It could be due to jealousy. Some villagers might be jealous of Naruto's power and Hinata's noble status. So, they spread false rumors that lead to their banishment.
Stuttering is often used to show their nervousness. Naruto, who is usually confident, stuttering around Hinata can show his deeper feelings for her that he might not be fully aware of or know how to express. For Hinata, it emphasizes her shy nature.
Another reason is that in the original series, Naruto has a big dream and strong will. When he dominates in fanfiction, it's a continuation of that. Hinata, on the other hand, is often seen as someone who supports and admires Naruto. Fans like to see how Naruto's dominance plays out in different situations, whether it's in battles, relationships or village - related matters. This exploration of different aspects of their relationship through Naruto's dominance is what attracts many readers to such fanfiction.