A couple of things struck me about the video, first, I like the way he bulldog clipped prints to the gallery wall. Framing is a personal matter and glass always gets in the way of a print, even if it's necessary long term.
Second is the trust people have in him and the confidence he has in his own method. A negative is an odd combination of fragility that demands sensitive but robust handling, and some of those photos took years to achieve and have a photographer's reputation hanging on them. When you consider a Diane Arbus print went for top side of $400,000 a few years ago, and the negatives are literally irreplaceable, there's a lot of responsibility comes with his creative day job.