Yes, it can be wrong. Fanfic is a creative outlet for many fans. They pour their love for the Harry Potter world into these stories. Making fun of it is like making fun of someone's passion project.
No. The statement as it is doesn't seem correct because of the 're' which makes it unclear. A correct statement would be 'Harry Potter has a lot of fanfiction' or 'There is much Harry Potter fanfiction'.
I don't think so. Usually, Harry Potter fanfics are categorized by things like the time period they're set in (like during the Hogwarts years of the main characters, or post - war), or the relationships they focus on (like Harry and Hermione's friendship in an alternate universe). 'We re screwed' is just an expression that might be used in a fanfic when the characters are in a tough situation, not a common type on its own.
In 'harry potter the wrong choice fanfiction', it could be centered around Harry Potter making a wrong choice in his fight against Voldemort. Maybe he decides to face Voldemort alone without the help of his friends and the Order of the Phoenix, thinking he can handle it all by himself. This wrong choice could lead to him getting captured or even losing his magic. It could also be about him making a wrong choice in terms of the magical artifacts he uses. For instance, he might choose a cursed object thinking it will help him, but it only brings more trouble.
The statement is wrong because 'Harry Potter' is an original creation. Fanfiction is something written by fans using existing works as a base, and 'Harry Potter' is not based on any other pre - existing work in that sense.
I'm not entirely sure what're' means in this context. 'Harry Potter fanfiction' is a type of fictional writing created by fans. It could be that the statement is trying to say that Harry Potter has a lot of fanfiction. Fanfiction often explores different storylines, relationships, or scenarios within the Harry Potter universe that may not be in the original books.
It could be because some fanfiction writers want to take a different approach and create a new storyline where Harry's role or perception is challenged.