Well, perhaps it goes against their traditional values. House elves are very set in their ways and are bound by their own magical and cultural norms. Fan fiction might be seen as something that distorts or misrepresents the world they know, so they don't approve of it.
The house elves are creatures of habit and loyalty. They focus on their duties and the established magical hierarchy. Fan fiction might be seen as a disruption to this. It could play with characters and scenarios in ways that the house elves, who are very traditional, would find unacceptable. Maybe they think it's disrespectful to the original creators or the integrity of their world, and that's why they don't approve.
Another reason could be that she wants to control the narrative around her works. Fan fiction can spread quickly and widely, and if it contains inaccurate or inappropriate interpretations of her stories, it could potentially damage the reputation of her original works. Also, she may prefer that readers engage with the official versions of her stories rather than fan - made alternatives.
They might not approve because fan fiction often involves creative interpretations that could be seen as a threat to the order they uphold. House elves are all about maintaining the status quo, and fan fiction has the potential to disrupt that.
There could be several reasons. One is that Frederick might be very attached to the official version of Percy. Fanfiction can be very different in terms of plot, character development, and tone. He may not like the idea of others taking liberties with the character he has a certain perception of. Another reason could be that he has a particular aesthetic or moral view related to the Percy story, and fanfiction often doesn't conform to it. For instance, if he believes that Percy should always be portrayed as a heroic and morally upright character, and some fanfiction shows Percy in a less favorable light, he would disapprove.
Someone might say it because they want to focus on the original work. Fan fiction can be a distraction from the real essence of the original story.
Maybe it's because creating really good fan fiction takes a lot of creativity and time. Not everyone has that to spare.
Well, it could be that Ron has his own ideas about how Ginny and Harry's relationship should be. Fanfics often take creative liberties and might deviate from what he thinks is the 'right' way for them to be together. He might not like seeing their relationship twisted or fictionalized in ways he doesn't agree with.
Maybe they find it not engaging enough or think it's a waste of time.
Maybe you find non-fiction more interesting or relevant to your current needs and interests.
It could be that you feel intimidated by the writing process or don't have enough confidence in your storytelling skills. Sometimes, life gets busy and you don't have the time to focus on it.
Some men might find non-fiction more practical and applicable to their lives. Maybe they think fiction is too imaginative or not relevant to real-world problems.