This thread just gets better and better.
I hadn't heard of the mystery box thing, thanks @UtopiaPlanitia
I just read a reddit post about it and Lost and seeing it as a form of con or even a cult where only the leader is allowed to have the answers. (I wonder if some versions of trans ideology are like that, the person is offered a shiny mystery box which promises them peace in themselves but when it opens they just find another box, and another and another.)
In contrast to that, I read an interview with Celine Sciamma where she talked about allowing the characters and the situation to give rise to the organic consequence. For me, her film Petite Mamam is a beautiful intricate unfolding mystery. Totally the opposite of the style talked about here.