The fanfiction changes the traditional view in that it portrays Harry as someone who can say no. In the original series, he was almost always on the side of Britain and its wizarding world. By refusing to help, it gives a different perspective on his relationship with the country. It might also make readers think about the concept of heroism in a different way, as a hero doesn't always have to be at the beck and call of his homeland.
One possible reason could be that he's tired of being used by the British wizarding world. He has faced so many challenges and been through a great deal of trauma, like fighting Voldemort multiple times. He might feel that it's time for others to take responsibility and that he wants to focus on his own life for a change.
The fight against Voldemort would be very different. Since Hogwarts is a key place in the battle against the Dark Lord, if Harry isn't there, the defenses of Hogwarts might not be set up in the same way. Also, he won't be trained by the professors, so his magical skills won't develop as they did in the original story. Without Harry at Hogwarts, the balance of power between good and evil in the wizarding world could shift in a very unexpected way.
In some fanfiction, the 'Harry Potter' world might be depicted as ruining Britain by changing its social structure too drastically. For example, if the wizarding world suddenly becomes fully exposed to the Muggle world in a fanfic, it could cause chaos. Muggles might panic at the existence of magic, and the established order in Britain, both in the wizarding and Muggle parts, could break down.
In some fanfictions, it might be through the over - expenditure on magical infrastructure related to Harry Potter. For example, building huge Hogwarts - like schools all over Britain could drain the economy. Also, the cost of magical creature conservation, which is highly emphasized in the Potter universe, could be exorbitant if implemented on a large scale.
It makes him seem more self - centered at first glance. Traditionally, Harry was seen as the savior of Britain, so leaving it to its fate goes against that heroic image. But on a deeper level, it could also show his growth into a more complex character who has his own needs and boundaries.
She might be heartbroken. Ginny could initially be in shock and disbelief. She may retreat into herself, spending a lot of time alone in her room, crying and trying to understand why Harry would refuse.
It adds a new element of defense. Traditionally, Harry uses his wand and spells for protection. But with a shield, it gives him a more physical form of defense. It can change the way battles are fought in the story.
If Harry Potter refuses to help fanfiction, it might result in some fanfiction losing a bit of authenticity in the eyes of fans. Since Harry is such an iconic character, his absence of support could make some people view certain fanfictions as less legitimate. However, it could also encourage fanfiction writers to develop their own unique voices and storylines without relying on the character's 'approval'.
The relationships in the story are also affected. His friends might turn against him if they discover he is stealing life force. For example, Hermione would likely be horrified and try to stop him. This changes the dynamics of their friendship. Also, the wizarding world would view him as a threat rather than a savior.
Yes, it could. If Ginny really hurts him badly, Harry might become more cautious about love in the future. He might be afraid to open his heart again so easily.