In the original, Harry has a sense of wonder about the wizarding world. But if raised by Creepypasta fanfiction, he might fear it. The original has clear good and bad sides, but this would be muddled.
The original Harry Potter story is centered around themes of friendship, love, and the fight against evil in a rather traditional magical setting. However, if Harry was raised by Creepypasta fanfiction, the tone would be much darker. The relationships in the story would likely be more complex and less positive. Instead of the warm and inviting Hogwarts, Harry might be in a more desolate and dangerous place. The magic he learns could be more about survival in a cruel world rather than for the betterment of the wizarding community as in the original.
The original story of Harry Potter is a tale of a boy's journey through a magical world filled with magic, mystery, and hope. But if he was raised by Creepypasta fanfiction, everything changes. For starters, the characters around him would be very different. In Creepypasta, characters often have a more sinister or at least a very strange nature. Harry's own character development would be skewed. He would not have the same moral compass as in the original. His encounters with magic would be more about the unknown and the dangerous rather than the exciting and the new. Also, the overall plot would not be about saving the wizarding world from a known evil like Voldemort but rather about surviving in a world full of unidentifiable and often psychological terrors.