I like how this Interviewer seems to be a recurring character throughout some of the Association Identities, she appeared in Cinq Don Quixote and Outis' stories.
Maybe Sonya was an orphan raised by the dieci, and that’s where he got the idea of a saint from. Or maybe he was once a dieci fixer who grew discontented by the dieci’s and the saints inaction about the world, even though they were so “enlightened”.