fictional text-based CSA is now forbidden in AI Dungeon text adventures, so there's now a (very poorly working) filter that detects it then cuts off adventures, and also the Latitude team reads through people's private, unpublished adventures
https://latitude.io/blog/update-to-our-community-ai-test-april-2021/
there are rumors going around that this filter will be expanded to include things like incest, bestiality, and non-consensual sex acts, but I haven't personally seen any verification of these rumors