Some people might hate Pokemon fanfiction because they prefer to stick to the official Pokemon storylines and characters as created by the original developers. Fanfiction often takes creative liberties that can deviate significantly from what they consider to be the 'true' Pokemon universe.
Well, it could be that they've had bad experiences with poorly written Pokemon fanfiction. There's a lot of it out there, and if someone has read a bunch of stories with bad grammar, inconsistent characterizations, or just plain silly plots, they might start to dislike the whole concept of Pokemon fanfiction.
Maybe Ash hates Pokemon fanfiction because it often goes against the official storylines and characterizations he is used to in the real Pokemon world. Fanfiction might distort the relationships between characters or create out - of - character situations for him.
One possible reason could be a miscommunication. Maybe Serena did something that Ash misinterpreted. For example, she might have made a decision about their pokemon journey without consulting him, and Ash, being independent, took it the wrong way.
Maybe Tails hates fanfiction because it often goes against the original vision of the character. Fanfictions might portray him in ways that he doesn't like or in situations that are inconsistent with the official story.
Some might hate Pokemon fanfiction because they prefer the official canon. They feel that fanfiction often deviates from the original storylines, characters' personalities, and the overall world - building of Pokemon. It can be jarring for those who have a strong attachment to the official version.
Well, perhaps in fanfiction, their characters are often misrepresented. Maybe Percy's personality traits are distorted in a way that makes him seem out of character when paired with Jason, which could lead to Percy seeming to 'hate' Jason in those stories.
Another aspect could be related to past traumas. Naruto has been through a lot, and if the Konoha 11, even unintentionally, reminded him of some of the negative experiences he had in Konoha, like the ostracism he faced as a child, it could make him hate them in the fanfiction.
In some fanfiction, Naruto might be depicted as hating toads because the author wants to explore an alternative personality or backstory for him. Maybe they want to show a more rebellious side of Naruto who resents the toads for their role in his training or for the demands they place on him.
Well, perhaps yoh has had some bad experiences with human fanfiction in the past. Maybe yoh read some really poor - quality ones that were full of clichés or had terrible writing. Or it could be that yoh simply prefers other forms of literature or storytelling over human fanfiction. There are so many different types of creative works out there, and yoh might just be more drawn to non - fanfiction works that deal with humans in a more 'original' way, like classic novels or biographies.
Maybe he thinks it distorts the real story of the Avengers. Fanfiction often takes the original story and characters in unexpected directions, which might not sit well with him.
Maybe Ash has a particular view of his own character and the way Cynthia is portrayed in fanfiction doesn't align with his idea. He might feel that the fanfiction distorts their characters or the relationship between them in some way.