Maybe, just maybe, Rockwell has got out of this what he set out to get: your comments and chatter. Why not send him a donation? He does what he does to aid us.
I think that if you give the limits of human anatomy another moment's thought, you may agree that whatever he is resting his camera on, cannot be HIS knee. That Exakta model looks like my first single lens reflex, which I bought in 1956. A long time ago.
Too bad that the statistics for rehabilitation, where educating inmates has proven to be cheaper and more effective at reducing recidivism, don't bear you out.