First, she can simply avoid reading it. There are so many other forms of Naruto - related content, like the original manga or anime, that she can focus on instead.
She could also create her own Naruto - inspired content that adheres to her own standards. This way, she can have the Naruto - related creative outlet she wants without having to deal with the aspects of fanfiction that she dislikes.
If she's bothered by the existence of certain types of Naruto fanfiction, she could try to get involved in Naruto fan communities and advocate for better - quality writing and more respectful interpretations of the source material. However, this would require her to engage with something she hates, which might be difficult.
The writers could stop writing that type of fanfiction if they respect Ash's 'feelings' (assuming he were a real person with real opinions).
She could also engage with the fanfiction community and share her views. Maybe by expressing what she doesn't like about the current Hermione fanfiction, some writers might take her ideas into account and create something more to her taste.
If Paul hates Bella fanfiction, he can simply avoid reading it. There are plenty of other types of literature or fan - made works out there that he might enjoy more.
One option could be to simply avoid reading it. If it bothers him that much, he doesn't have to engage with it at all.
He could also try writing his own fanfiction. By creating his own version, he might gain a new perspective on Hermione fanfiction and perhaps even start to like it. Or he could engage in discussions with fanfiction writers to understand their intentions better.
One option could be for him to simply avoid reading it. If it's online, he can stay away from the relevant websites or fanfiction communities.
One option is to simply avoid reading or engaging with Rias fanfiction. If the OC hates it, there's no need to subject it to that content.
He could simply avoid reading it. Just stay away from any fanfiction platforms or books related to magic fanfiction.
If it really bothers her, she could try to find a community or group of people who also dislike Bella fanfiction and discuss her feelings with them. This way, she might feel less alone in her dislike and could even get some ideas on how to deal with it better. For example, they could share tips on how to filter out Bella fanfiction when browsing for new stories.
One thing that could be done is simply respect his opinion. Don't try to force him to read or like poker fanfiction. If others like it, they can enjoy it among themselves without involving Percy.