Well, first of all, the Potters are fictional entities within the Harry Potter universe. Fanfic is a phenomenon that occurs in the real - world fandom. The Potters have their own story arc in the books and movies. They are not aware of fanfic as it is something created by fans. Also, giving away fanfic is something that fans or fanfic - related platforms do. It's not in the nature of the Potters, who are characters in a magical world that has its own set of rules and plotlines, to be involved in the distribution of fan - created fictional works.
There's no real reason for the Potters to give away fanfic. Fanfic is a fan - created content, and the Potters are fictional characters. They don't exist in the real world where fanfic is created and shared.
I'm not sure if the Potters (as in the characters in the Harry Potter series) would give away Harry Potter fanfic. In the official lore, there's no indication of them doing so. Fanfic is more of a creation by fans in the real world rather than something the fictional characters would be involved with.
Harry might walk away because he has a new mission that he can't share with others. He realizes that to protect the wizarding world in a more fundamental way, he has to go it alone. So, he quietly walks away from his normal life to pursue this unknown and dangerous task.
Maybe they were forced to. Some fanfictions could depict a situation where an external power, perhaps a more powerful dark wizard or a corrupted magical organization, compels them to give Harry away. This could add a layer of tragedy and helplessness to their story.
Maybe for love. They might have fallen deeply in love and want to be away from the prying eyes of the wizarding world.
Perhaps he realizes that the fanfiction is taking him in a direction that doesn't align with his true character. Harry is known for his integrity, and if the fanfiction was making him act out of character, he might give up.
Sirius Black could also be part of it. He was Harry's godfather. He might have escaped from Azkaban earlier in this fanfic. He teams up with the Potters to rescue Harry. He could be the one who scouts out the Dursleys' house before the actual rescue operation, using his skills as an Animagus to stay hidden.
He could wear a mask to protect his loved ones. If there's a new threat in the wizarding world that targets him and those close to him, a mask would be a way to keep his identity hidden so that his enemies can't use his friends and family against him.
Yes, they might. Just like any other group of people, those who identify as Blacks or are part of the Potter family name (if we assume there are real people with that name) could be fans of the Harry Potter series and thus read fanfiction. Fanfiction offers a wide range of interpretations and extensions of the original story, and anyone with an interest in the magical world of Harry Potter could be drawn to it.
It could be a reaction to the quality or direction of fanfic. Maybe the idea is that the 'Harry Potter' entity, in this made - up situation, feels that the fanfic is not in line with the spirit of the original story. Fanfic can range from really good interpretations to ones that are completely off - base, and if the official side sees too much of the latter, they might want to distance themselves, which is represented by 'giving up' fanfic.
Another aspect is quality control. A lot of fanfic varies greatly in terms of writing quality. Some people might have had bad experiences with poorly written Harry Potter fanfic in the past and thus choose to say no to all of it. They don't want to waste their time sifting through sub - par stories when they can just re - read the original, well - crafted novels.