I would ask him to talk more about Narcanon, just like you said. You can say it piqued your interest and you'd like him to explain more. One thing is for sure though, a good T keeps their personal beliefs/religious affiliations out of the therapy office. The fact that Narcanon was even a subject of conversation and that he was defending it is a red flag. I don't get what his point of playing some weird mind game would be, but thats another red flag too.