AI Dungeon had a lot of controversy right at its peak, largely due to OpenAI's moralistic stance. They eventually dropped OpenAI as a model provider (I think they use AI21 Labs now?) but the damage was done, especially after it came out that OpenAI was secretly logging all users' stories and sending them to third-party contractors to improve their own filters. A lot of people switched to private and uncensored alternatives like NovelAI.

https://www.polygon.com/22408261/ai-dungeon-filter-controver...

https://old.reddit.com/r/AIDungeon/comments/nml856/latitude_...