I completely agree; as fun as it is to laugh at bad fan fiction, it has a purpose in getting fans to come together and share ideas and (hopefully) breed original ideas. It becomes a pit of voles when nobody encourages each other to break the mold, to push each other to do bigger, harder, greater projects in which actually completing those challenges is much more satisfying than getting a simple "review" of praise that amounts to nothing more than them saying "Great chapter, looking forward to more!" A lot of places don't encourage criticism, and that's as much of a problem as it is bullying those bigger than you out of petty jealousy or because you hate their narrative or whatnot.
Also fuck people like Cassandra Clare, E.L. James, and others who publish their shitty fan fiction by just changing the names. It's fucking disgusting, and it just feeds into egos of their readers who think they can get away with it, too. I have no clue how it is they managed to get enough connections who were willing to turn a blind eye and give them a publishing deal, but they never should've. Again, I think Anne Rice had the right idea in pursuing lawsuits against fan fiction writers, even if it was simply because she thought a fangirl was making a profit off of writing two-or-more of her characters partaking in a silly fantastical "what if" 25+ chapters scenario.