Im guessing you haven't watched many of their videos??
well I can't say Im the authority on the moss pawn guys but I do watch their videos on a fairly regular basis, and I dont think a lot of what you said rings true...... but in the end, they are making money at it, and probably a fair amount.
They've done torture tests before, it's nothing new and they are a safe distance away. They use an EOD type suit for anything up close and dangerous. This however, wasn't that bad.