Perhaps Naruto has grown weary of the excessive focus on Sakura in fanfiction. He might feel that other aspects of his life and the world around him are being overlooked. His own growth, his relationships with other characters like Sasuke, or his dreams for the village are not given as much attention as they should be in these fan - created stories. So, he's had enough.
Well, one reason could be that Sakura is often written as being too pushy towards Naruto in fanfiction. He might get tired of her always trying to boss him around or control his actions.
One implication is that it could lead to a decrease in the popularity of Naruto fanfiction in general. If the general sentiment is that there's enough, fewer people might be interested in creating or reading new fanfictions.
In my opinion, 'naruto has had enough fanfiction' may mean that the Naruto series has been subject to an overabundance of fan - made fictional works. Fanfiction can be great, but when there are too many, it can start to feel like the original Naruto concept is being drowned out. There could also be a sense that the creativity in fanfiction has become repetitive or is going in directions that don't really fit with the core of Naruto.
Well, 'naruto has had enough fanfic' might imply that the Naruto universe has been so overly explored in fan - created fictional works. There could be various reasons for this. For instance, with the large number of fanfics, the quality might be diluted, and the original essence of Naruto might be getting distorted in some of these fan - made stories. Also, it could be that the fans themselves feel there are just too many fanfics, and it's taking away from the uniqueness of the official Naruto storylines.
It could cause a split in the community. There would be those who respect Naruto's (hypothetical) view and change their writing style. However, there might also be others who continue writing as they please, leading to some tension between different groups of fans. This could also lead to more discussions and debates within the community about the proper way to write fanfiction.
Maybe they think the fanfictions are starting to overshadow the original Naruto story. There are just so many different versions of fan - made stories that it's getting hard to distinguish the original from the fan - created.
They might feel that the flood of fanfic is diluting the true nature of the Naruto story. There are so many different interpretations in fanfics that it could be confusing or detracting from the core of what Naruto is all about. Also, if someone is more of a purist about the original Naruto series, seeing so much fan - made stuff might make them feel that enough is enough.
Maybe Naruto decides to leave Konoha for a while in the fanfiction. He might feel that the village has let him down in some ways and needs to find himself outside of it.
It could be that the fanfiction often puts Kakashi in situations that Naruto doesn't think are appropriate. For example, if the fanfiction makes Kakashi act out of character in terms of his loyalty or his ninja values. Naruto, who has a deep bond with Kakashi, might not like seeing his mentor misrepresented in such ways.