Thanks, the word 'facade' is what came to mind reading your reply. Here in Europe I've met several Iranians, though all happenned to have lived in Western countries for many years. I am sure in those cases they are genuinely nice people, so no facades involved.
>> There is no room for criticism, so things are not talked about and never sorted out
This resonates with traditional Catholic families too, where "elephants in the room" are not really addressed/dealt with many times. E.g. a daughter/granddaugter having a kid out of marriage etc.