I was on an UX flight today, and before departure my seatmate got (politely) reprimanded by the purser (who was called by the other FA) for recording images of the inside of the plane with his video camera. He was asked to delete what he had recorded. He did comply without a fuss- he seemed rather sheepish in general, to the point of looking scared by my occasional snoring sounds when half-asleep! The door was still open and mobile phone usage is explicitly allowed until door closure so I can only infer they asked him to delete it for privacy reasons.
Were the FAs in the right? Why/why not?