There are currently ~2300 works in AO3 tagged with "Created Using Generative AI"
I'll be upfront with my opinion, which mirrors my opinion in regards to my field: using AI will only hasten your own obsolescence. The point of fanfiction is not to crank out fics, but rather to enjoy the hobby and communities of writing and fandom.
i must not stir the pot. stirring the pot is the notifications-killer. participation in the discourse is the little-death that brings total activity obliteration. i will face the bad opinions on the internet. i will permit them to pass over me and through me. and when they have gone past, i will turn the block button onto their source. where the discourse has come from there will be nothing. only i will remain.