FYI, I have also locked all my fanfics down to registered users only because of the AI scraping on AO3. I'm one of many fan creators doing this right now and I know it stinks for users without an AO3 account, but it's the only option writers have available to us at the moment to stop our work from being scraped and stolen.
If this makes you mad, the Federal Register is currently open to comments on AI accountability until June 20th, 2023.
It only takes a second to leave a comment to ask for legislation that works used in AI creations or training MUST secure the express consent of the original creator before they can be used. If we can get protections for artists, writers, musicians and everyone who creates that their work cannot be used in AI without their permission, we can go back to making fanworks freely available without fear of them being misused. Until then, we're stuck playing defense until the courts catch up.
(If you're a fan creator looking to do this as well, AO3 has a tool to let you do all your fics at the same time in seconds. On your dashboard, go to Edit Works and you'll be able to change the status on everything at once.)
If you missed the context, AO3 recently found that the archive was scraped for use in AI services like ChatGPT and Sudowrite. While they put in protections in December 2022 to try to stop it from happening in the future, it's not foolproof and there is nothing they can do about works already swiped prior to that date. The archive is recommending fan creators restrict their works to registered users only to prevent against additional large scale scraping in the future.