Well a few things, people definitely know when they are on camera. Was watching a documentary on shaolin monks not long ago, and then watched a guy who trained in that temple talk about that same documentary and it was sort of eye opening.
I cant claim if it was scripted or not, it probably wasnt, but they dont come in their with camera crews and all that and do a docuseries of the boring parts for netflix. Im not trying to criticize the show (havent watched it), just saying I dont really ever believe these docs are “this is exactly how everything is”.