In a facebook magic group someone asked this question:
The problem the person has is really a non-issue. Who really cares if a video editor knows how a trick works? They are someone you have hired to help you. It’s like having a topit sewn into your jacket, if the person doing the sewing knows you have a secret pocket, does it matter?
No it doesn’t.
Another when hiring someone to work on a video for you or for when you work on TV, let them know what to not record or what to be aware of. I was lucky my first local TV show that I was on, the director worked on one of Siegfried and Roy‘s videos and he asked me if there were any bad angles or things he should be aware of to not show. That taught me it’s better to be proactive and tell them what not to show than try to figure it out in the moment when you know the camera is in the wrong spot.