There really is no valid reason. However, it could potentially be due to some sort of extreme misinterpretation. If someone only had a very superficial understanding of both, they might make a completely wrong association. For example, if they just heard a few random terms from each and wrongly assumed there was a connection. But in reality, the worlds of Harry Potter and Sentry fanfiction are so different in terms of their magic or power systems, character archetypes, and overall plot structures that it makes no sense to think one is the other.
It's a very strange thought, but perhaps someone who is very confused or misinformed might think so. Maybe they don't fully understand the nature of either Harry Potter or Sentry fanfiction. It could also be a result of a really wild and baseless theory that has no real foundation in the facts of the two fictional works.
Some people might think so if they only focus on certain parts, like the dark magic used by the villains or the dangerous situations Harry and his friends get into. However, the series as a whole is not about promoting dark things. It's about the fight against the dark, and the positive values of friendship, loyalty, and courage that the characters display. So, it's a wrong view to consider it dark fanfiction.
It could be that they haven't really delved deep into either story. They might be making a hasty comparison because both 'Harry Potter' and 'Dracula' are part of the fantasy genre. However, when you look closely, 'Harry Potter' is about a boy wizard in a school learning magic, while 'Dracula' is about a vampire preying on humans. The storylines are completely different. Also, the magic in 'Harry Potter' is more structured and related to spells and potions, whereas in 'Dracula' it's more about the supernatural powers of the vampire. So, it's really a baseless thought.
Probably they are just very confused. Maybe they don't really understand the fundamental concepts of either Harry Potter or Archer. Harry Potter is full of magic and wizardry, while Archer is something else entirely.
Well, it could be that they are new to the world of both Harry Potter and the source of Kakuzu. And without proper knowledge, they might assume that since both involve elements of the supernatural or magic in some way, that there is a connection. However, as we know, Harry Potter has its own rich tapestry of magic, such as the magic taught at Hogwarts, the magic of the wizarding families, and the dark magic associated with Voldemort. And Kakuzu comes from a completely different context with its own set of rules and characteristics. So it's just a case of misinformation or lack of in - depth understanding.
It could be that they have some confusion in their minds. Maybe they heard some false rumors or misinterpreted some similarities that don't actually exist. The Harry Potter series is very popular and well - known, and sometimes people make strange associations. However, there are no real connections between Harry Potter and Robin fanfiction. The settings, characters, and stories are all distinct.
Perhaps they are misinformed. They might not be fully aware of the distinctiveness of the Harry Potter universe and be making unfounded associations. Maybe they are confusing some general fantasy elements like magic and strange creatures, but in reality, the detailed world - building in Harry Potter is far from being related to Daedra fanfiction.
Perhaps they are confusing different fan - made concepts. There are so many different fanfictions out there that someone could get their wires crossed and wrongly assume Harry Potter is related to a fox fanfiction. But in reality, the two are completely separate things. Harry Potter has a very defined universe that doesn't involve fox - related fanfiction elements.
Some people might misinterpret the action and danger in 'Harry Potter' as violence. For example, the duels between wizards could be seen as violent, but they are actually a part of the magical world's rules and self - defense. Also, the battles against Voldemort and his followers might seem extreme, but they are essential for the story's plot about good triumphing over evil.
Maybe they are misinformed. They could have seen some fan - made content that focuses a lot on elves in the 'Harry Potter' universe and wrongly assumed that the whole series is an elf fanfiction. But the core of 'Harry Potter' is so much more than that.
They might be completely wrong. It could be that they are misinformed or have a very strange misunderstanding of what Harry Potter actually is. There's no connection between the two in terms of the core concepts of the series.