If yall make fanfiction using AI, you're the biggest loser loser-town has ever seen.

Like genuinely, use your BRAIN. YOU HAVE A BRAIN. Stop using AI because you don't want to put effort. If you don't want to do the work, you didn't want it. Don't do it if you're not ready to put in the word. 

"what about editing with AI" 
People make this excuse everytime. And you know what? It sucks. 
Editing with AI doesn't change that people don't have drinking water anymore. Also, editing with AI doesn't help your writing. If you don't make mistakes you will never learn. If you make it so that you have "the perfect story" then your story sucks ass. If you want to write a book and don't want mistakes, hire and or make your friend be your editor/proof reader.

Do it yourself.
Your creativity shan't be tainted by AI usage.