Fantasy religions in games aren’t typically very nuanced. Whether they are stereotyped as righteous and pure crusaders of good or corrupt and evil cults, they are often depicted as being literally true–gods speak directly their followers, if not make actual appearances. Praying at an altar or shrine often confers some sort of real bonus or blessing, suggesting an actual source of power. At the very least, there generally isn’t much that outright contradicts what a given fantasy religion has to say about a world, sometimes because the fantasy religion is being used as a conduit to info-dump at the player. In the Dragon Age series, the Chantry starts out as a way to explain parts of the world of Thedas to the player, but the player is quickly and increasingly encouraged to challenge the Chantry’s teachings.
(Spoilers for DA:O, Awakening, DA2, and the Legacy DLC to follow.)