"he just listens" is probably a false assumption. He famously promotes his documentary method of finding the "ecstatic truth", which "does not necessarily have to agree with facts". This style leads him him to script and stage scenes, sometimes with multiple takes. I don't think this counts as just listening.
Additionally, he has called cinema verite "a mistake".
Andrew Callahan of Channel 5 has mentioned several times that he adopted the technique of "active listening" which largely amounts to letting people talk until they stop. And then when you are tempted to prompt them, just wait and let them continue. And when they do that is when they start to really get real.
Additionally, he has called cinema verite "a mistake".