I certainly do not understand why anyone would consider either of these shots, or the general intent of the photogs, to be exploitative.

To me, exploitation is taking something for one's own benefit without caring or concern for anyone or anything else. Both of these photogs give me the sense that the "care" about their subjects and the plight of poverty that much defines their lives.

Whether the shots "move" me is a different matter - but nothing about them calls me to question their motives.