The original Hermione is proud of her Muggle - born status and her family. In the 'Hermione hates her parents' fanfiction, this fundamental aspect is flipped. It creates a whole new set of character interactions and plot possibilities. For example, she might not be as eager to return to the Muggle world during holidays like she is in the original.
In the canon, Hermione's parents are a source of support for her, even if they don't fully understand the wizarding world. In this fanfiction, with her hating them, it affects how she views herself as a Muggle - born witch. She may have more internal conflict about her identity and her place in both the wizarding and Muggle worlds.
In the original story, Hermione and Ron have a complex relationship that is full of love, albeit with some bickering. Fanfiction that has Hermione hating Ron completely goes against this fundamental aspect. Their friendship and later romantic relationship in the original are based on mutual understanding and shared experiences. So this kind of fanfiction takes a very different turn.
In the original story, Harry and Hermione are friends. But in the 'harry hates hermione fanfiction', it completely changes their relationship dynamic. It's a huge deviation as it goes against the foundation of their friendship that was built on mutual respect and support throughout the books.
The fanfiction goes against the character development in the original. In the books, Hermione grows to love and respect the Weasleys as she spends more time with them. But in this fanfiction, the hatred is a complete contrast to that natural progression of relationships.
In the original story, Harry and the Weasleys are like family, and Hermione is also very close to them. So in the fanfic, the hatred is a huge deviation. It goes against the established relationships of friendship and family that are central to the original plot.
In the original storylines, there is no such plot as teenage pregnancy for Harry and Hermione. Fanfiction takes this wild turn to create a completely different narrative. It might change the whole dynamic of their relationship which was mainly platonic in the original.
Well, the original 'Harry Potter' story is about magic, friendship, and the battle against evil. 'Sirus and Hermione' have their own relationships and roles within that framework which are mainly platonic and story - driven. The 'orgy fanfiction' completely goes against the nature of these characters and the overall positive and family - friendly tone of the original work.
In the original Harry Potter story, Bellatrix doesn't actually stab Hermione. So in the fanfiction, this is a major deviation. It changes the relationship dynamics between the characters. For example, in the original, Hermione and Bellatrix have their tense encounters but not to this extreme level of physical harm.
The original Harry Potter story has a strong family - love - centered theme. Harry's parents' love for him was so strong that it protected him even after their death. In the 'Harry Potter hates his parents' fanfic, this central theme is completely changed. It's a deviation that changes the whole dynamic of the relationships in the story. It's like changing the core of a flower, everything else about the story will be affected, such as Harry's relationship with his friends who also respected his parents.
In the original story, Naruto loves ramen. It's a big part of his character. So in this fanfiction, it's a complete opposite. It changes the fundamental aspect of his relationship with food.
Perhaps in this fanfiction, her parents have some secrets that Hermione discovers. These secrets could be related to the wizarding world and their connection to it. Their attempts to hide these things from her make her feel betrayed and thus lead to her hatred. For instance, if they knew about some dark magic in their family history but kept it from her.