It could also be that the plot of the fanfiction has Naruto in a situation where talking might put him or his loved ones in danger. So, for their safety and his own, he chooses not to talk.
One possible reason could be that Naruto has seen the toll the position takes on those who hold it. Maybe he witnessed the stress and loneliness that previous Hokages like his father had to endure. He might want a more carefree life, exploring the world and spending time with his friends and family without the heavy burden of leading the village.
One possible reason could be Naruto's independent nature. He has always been someone who forges his own path. In the Naruto series, he doesn't rely on traditional forms of status or hierarchy. So in the fanfiction, he might refuse peerage because he wants to be recognized for his own efforts and not because of a title.
Maybe in the fanfiction, Naruto has discovered a new family or group of friends outside the village who are in need of his help more urgently. He has to prioritize them over the village that banished him. He could also be trying to teach the village a lesson about the consequences of their actions by refusing to help.
One reason could be that she feels betrayed by Konoha. Maybe she has faced discrimination or unfair treatment there in the past because she's female in a world that might be more used to male ninjas. For example, she could have been passed over for important missions or training opportunities just because of her gender.
One possible reason could be Naruto's independent nature. He has always strived to make his own path and not rely on his father's legacy too much. So in the fanfic, he might refuse Minato to show that he wants to be his own person, not just Minato's son.
One possible reason could be a misunderstanding. Maybe Harry overheard Hermione saying something that he misinterpreted, like she was criticizing his actions but in reality she was just worried. For example, if Hermione was expressing concerns about Harry's risky adventures in a way that Harry thought was her doubting his abilities.
One possible reason could be that Naruto might feel he doesn't fit in with the members of Team 7. Maybe he has some personal goals that he thinks he can't achieve while being on the team. For example, he might want to focus more on individual training to become stronger in a specific area like mastering a certain jutsu, and he believes being on a team would be a distraction.
One possible reason could be that Naruto is too focused on his ninja duties. He has always been dedicated to protecting the village and his friends, and marriage might seem like a distraction from that. For example, he has to constantly be on guard against new threats and train the next generation of ninjas.
Perhaps Naruto has been pushed too far by the villagers' continuous mistreatment. Even though he has saved them multiple times, they still show hostility or indifference towards him. So, in the fanfiction, he decides not to help Konoha anymore as a form of self - protection and to break free from this one - sided relationship.
One possible reason could be that Naruto feels betrayed by Konoha. Maybe he discovers some dark secrets about the village that make him question whether it's worth protecting. For example, if he finds out that the village elders were involved in unethical experiments or unjust actions against certain groups. Another reason might be that Naruto has different ideals now. He could believe that there are more important things in the world than just protecting Konoha, like bringing true peace to all nations without focusing on one village's interests.