Well, for some, it's a form of creative outlet. They might not be satisfied with how the original Naruto series handled Sasuke and Sakura's relationship. They might think that the relationship was forced or not well - developed. So, they write these bashing fanfictions to rewrite the story in a way that makes more sense to them. Additionally, in the fanfiction community, there are different 'tribes' of fans. Some who don't like a particular relationship might write bashing fanfictions as a sort of reaction against the fans who do like it. It's also possible that they just want to explore darker or more alternative storylines that deviate from the positive portrayal of Sasuke and Sakura's relationship in the original work.
Some people write it because they may not like the canon relationship between Sasuke and Sakura. Maybe they preferred Sasuke with another character or just didn't like how their relationship developed in the original story. They use fanfiction as a way to explore their own ideas of what could have been different.
Some people write 'naruhina sasuke and sakura bashing fanfic' because they are die - hard fans of the Naruhina pairing. They might feel that Sasuke and Sakura somehow get in the way of the Naruhina relationship in the original story, so they create fanfics to emphasize Naruhina more by bashing the other two characters.
Some fans might write it because they want to explore alternative storylines. They might feel that the main trio gets too much focus in the original Naruto story, so they bash them to shift the focus to other characters they like better.
Some fans write 'naruto sakura and sasuke bashing fanfiction' out of a sense of creativity. They might feel restricted by the original narrative and want to break free. By bashing these well - known characters, they can introduce new plotlines and character arcs. For instance, they might not like how Sasuke was always so moody and cold in the original, so they write a fanfiction where he is even more unlikeable to make a point. Or they might not be satisfied with Sakura's growth as a character and choose to rewrite her in a much harsher light to show what they think could have been different in the story.
Well, for one, they might be really into the idea of Naruto and Hinata being together. And in their minds, Sakura gets in the way. So, to promote the Naruhina relationship, they bash Sakura in their fanfictions. Another reason could be that they simply don't like Sakura's character as it is in the original story. Maybe they think she's too whiny or too focused on Sasuke. So, they rewrite her in a negative way in their fan - created stories to suit their own preferences.
Some people write it because they are big fans of the Sasuhina pairing. They might feel that Sakura is in the way of their ideal relationship for Sasuke and Hinata, so they bash her in the fanfiction. It's a way for them to explore their preferred romantic scenario.
Some people write it because they don't like Sakura's character. Maybe they think she's too whiny or not as strong as she should be in the Naruto series.
Well, in the Naruto fandom, everyone has different opinions. Some could be writing 'naruto rinnegan sasuke bashing fanfiction' because they are fans of other characters and feel that Sasuke overshadows them. For example, if someone is a huge Naruto fan, they might write such fanfiction to make Naruto seem more heroic in comparison to Sasuke. Also, some might just want to explore different storylines where Sasuke isn't the 'favored' character, especially when it comes to his rinnegan power which made him extremely powerful in the original series.
Some fans write it because they want to explore different plot directions. They might not be satisfied with the original story's development regarding Sasuke and Sakura, so they create a scenario where they're dead to see how the story could change. It gives them creative freedom.
It could also be that they have a different vision for Naruto's character arc. They might think that Hinata and Sakura held Naruto back in some ways in the original story, so they create fanfiction to show what they believe Naruto could have achieved without their influence. Additionally, some might just be expressing their dislike for Hinata and Sakura's personalities as they were portrayed in the official story.
Some people write it because they might not like the characters of Ino and Sakura. Maybe they think their personalities are annoying or they don't like how they interact with Naruto. So, they create fanfictions to express their negative feelings towards them.