One possible reason could be to explore a different side of the character. By taking away his emotions, the writer can show how much emotions actually contribute to his actions and relationships. It's like a 'what if' scenario.
Well, if Harry Potter doesn't have emotions in the fanfiction, it would make the story much more robotic. The relationships he has with his friends like Ron and Hermione would be very different. There would be no emotional depth to their interactions. For example, when they face challenges together, instead of having the normal fear, excitement or determination, Harry would just act in a very matter - of - fact way, which would take away a lot of the heart and soul from the story.
It could be that the author wanted to show Harry Styles' character facing a challenge in understanding emotions to add depth and complexity. Maybe it's related to his past experiences or a specific event in the story.
Perhaps he was cursed. In the wizarding world, there are many dark curses that could affect a person's mind, and one such curse could target his emotional understanding. Also, it could be due to his isolation. Harry has often been alone or felt alone, and this lack of regular social interaction with a diverse range of people could have made it difficult for him to develop a normal understanding of emotions.
In fanfiction, Harry may not understand emotions because of his traumatic experiences. Losing his parents at a young age and constantly being in life - threatening situations can make it hard for him to process emotions. He's always in survival mode. And, he might be so focused on the big battles and challenges in the wizarding world that he overlooks the subtleties of emotions. For example, he might not understand the deeper feelings of loyalty among his friends until it's put to a real test.
Well, it could be that the authors of fanfiction want to explore different aspects of the Harry Potter universe other than fighting. Maybe they're more interested in the relationships between characters or the daily life at Hogwarts.
Well, Harry Potter is a character in the original story. Fanfiction often takes the original story in all kinds of wild and different directions. Harry, being from the original, proper story, may not be able to understand these new and sometimes out - of - the - box interpretations that fanfiction presents. It's like he's from a very specific world, and fanfiction creates a whole bunch of new worlds based on that, which he has no knowledge of.
Well, in his relationships, it causes a lot of confusion. His friends may try to communicate their emotions to him, but he just doesn't get it. This can lead to misunderstandings and even arguments. In a romantic relationship, it would be even more difficult. He might not understand the concept of compromise or how to make his partner feel special. Since he doesn't understand emotions, he could end up making his partner feel unloved or unappreciated.
It could be that in the fanfiction, a dark wizard has somehow influenced the Weasleys' actions without their knowledge. Harry, being cautious after all his experiences with the dark side, might misinterpret these changes in their behavior as signs of untrustworthiness. So he doesn't trust them until he figures out what's really going on.