In such a fanfic, the Dursleys might first be in shock. They've always tried to suppress Harry's true identity. They could be jealous of his fame. Maybe Vernon would try to use Harry's fame for his own gain, like getting business deals. Petunia might be conflicted as she has some knowledge of the wizarding world through Lily. Dudley, on the other hand, could either be envious or start to see Harry in a new light, perhaps even trying to befriend him to get a share of the limelight.
In fanfiction, if the Dursleys find out Harry is famous, they might initially be in shock. They've always tried to suppress Harry's identity. They could be envious and try to use his fame for their own gain. For example, Vernon might try to get business deals using Harry's name.
Well, it's hard to say exactly. Maybe Mr. Dursley would be outraged at how his family is being fictionalized in these fan - created stories. He's so proper and hates anything out of the ordinary. Mrs. Dursley might be more interested in how people are writing about her cooking or how she runs the household in these fanfic versions. Dudley, on the other hand, might just be confused as to why anyone would write stories about his family at all.
Their attitude could change from disdain to a begrudging respect. They might realize they can't push Harry around as easily anymore. They could start to be more cautious in how they treat him.
Well, the goblins could start a revolution of sorts. If they find out Harry is abused, they might see it as a sign of the general corruption and unfairness in the wizarding world towards those without power. They could use Harry as a symbol of this oppression and start demanding changes in the way the wizarding world treats its children. This would likely lead to a lot of conflict with the wizarding authorities, but it could also bring about much - needed reforms.
In such a fanfic, perhaps McLaggen accidentally knocks out Harry during a Quidditch practice. Maybe he was trying to show off and his spell backfired. It could lead to chaos on the Quidditch field with the other players being shocked and having to deal with an unconscious Harry.
They would probably be horrified. The Dursleys detested all things related to magic in the original Harry Potter story. Fanfiction might introduce new and strange magical concepts that would go against their Muggle - centric and magic - hating views.
If the Dursleys watched Harry Potter fanfiction, it would be a complete shock to their system. They have spent so long suppressing Harry's magic and trying to keep their world as normal as possible. Fanfiction often explores different aspects of the wizarding world, some of which might be quite extreme or different from what they think they know. They might initially be very confused, and then probably angry that such things exist. They could also try to stop Harry from having any access to it, thinking it would further fuel his 'unnatural' interest in magic.
In this type of fanfiction, one possible scenario could be that Harry's already difficult life at the Dursleys takes a fatal turn. Maybe the neglect and abuse he endures finally become too much for his young body to bear. For example, he could be severely underfed and fall ill without proper medical attention, leading to his death. It would also have a huge impact on the wizarding world. Since Harry was seen as the 'Chosen One', his death might cause chaos and despair among those who were hoping he would defeat Voldemort.
They might be shocked and jealous. Maybe they'll try to take advantage of Harry's newfound wealth.
Well, they might be a bit overprotective at first. They could give Harry a hard time, asking him a lot of questions about his intentions with Ginny. Maybe they'd be a bit suspicious of him too.