Sure. In some fanfictions, Dumbledore might teach Harry about leadership. Given that Harry has a big role to play in the wizarding world, Dumbledore could impart wisdom on how to lead others, make difficult decisions, and inspire loyalty. This kind of teaching can be crucial for Harry's development as a character in the fanfiction world.
It has a huge impact. First, in the context of the fanfiction, Dumbledore's teaching of Occlumency could be a way for Harry to finally have some privacy in his mind. Harry has always been an open book in some ways, and this would change that. Second, it could enhance his relationships. He'd be less likely to accidentally project his thoughts or feelings onto others. And third, it would give him an edge in the fight against the Dark Arts. He could better resist Legilimency - based attacks and perhaps even use Occlumency in a more offensive way against the Death Eaters.
He could gain the ability to shield his mind completely. This means no one, not even the most powerful Legilimens like Voldemort, could peek into his thoughts. Also, he might be able to project false thoughts, a useful skill when dealing with enemies. For instance, he could make them think he's planning one thing when in fact he's doing another.
A good alternative could also be Snape teaching Harry about defensive magic techniques that are not commonly known. It could include special spells and how to counteract dark magic in unique ways.
The 'harry potter exposed dumbledore fanfiction' might deal with events or decisions that Dumbledore made which were not fully explored in the original books. For example, his relationship with Grindelwald and how that influenced his actions later. It could also explore his sometimes morally ambiguous choices, like how he used Harry as a tool in the fight against Voldemort without fully disclosing all the details to him. Fanfiction often takes the existing characters and world and delves deeper into their stories.
I'm not sure specifically what that particular fanfiction is about. It could be a very dark or alternate - universe take on the Harry Potter story where Harry turns against Dumbledore for some reason, perhaps feeling betrayed or misled by him in this fan - created scenario.
One possible view is that in some fanfictions, Dumbledore's manipulative side can be shown through his withholding of information from Harry. For example, he might keep secrets about Harry's past or his true destiny. This can add a layer of mystery and tension to the story.
The 'dumbledore violates sleeping harry fanfiction' is likely a very dark and inappropriate take on the 'Harry Potter' world. J.K. Rowling created a world with certain values and ethics, and this title seems to violate those. It could be a sign of a fan who has gone astray in their creative interpretation, or perhaps it's just a made - up title to get attention, but either way, it's not in line with the positive aspects of the 'Harry Potter' fan culture.
If Harry spilled the beans about the voices to Dumbledore, it could have sparked a series of investigations and potentially revealed hidden secrets earlier. This could have altered the balance of power and the direction of the plot in significant ways.
Dumbledore, as Harry's guardian in the fanfiction, would probably use his influence in the wizarding world. He could make sure that Harry is taught by the best teachers at Hogwarts. He'd also be there to offer advice and guidance, especially when Harry faces challenges like dealing with Voldemort or other dark forces. For example, he might teach Harry some advanced defensive magic privately to better protect himself.