The interviewer is a bit of a "photography narcissist" and basically just created the channel to have interesting people to photograph. The interview angle was

The interviewer is a bit of a "photography narcissist" and basically just created the channel to have interesting people to photograph. The interview angle was added later, and it wasn't something he cared about initially. The impression I get is that it's best not to explore his motivations too much, as they're quite disappointing compared to what he's been able to create.