AI has already be able to win human at so many games chess, video games, go, and the lists gets bigger every so often.
So give AI the challenge to open and run a site without making it public knowledge that AI is running it and just have as a well advertised site where the public can go for help when dealing with abusive cults. Make the site easily available to member's of these cult having doubts as a place to go for some good advice back by research. That way you are not tricking anybody into getting deprogramed and only helping those that are having doubts.
The AI would only improve with time and more data.