Without minimizing the tragic consequential loss of life ...
... I'm just amazed that these were in use without people realizing they were divining rods. Not only in the swinging action of the rod but in the extravagant claims (they could detect *anything*; they worked from the air; they worked on tiny amounts; they worked at enormous range; they worked through shielding and deep underground. Indeed, the only missing claims that a standard dowser would make is that worked even over maps).
No purchaser can have bought them without knowing either that (a) they knew enough science themselves to see it was bogus or that or (b) they knew so little science they needed to consult with someone who could do (a). Buyers were, at the very best, criminally negligent, and at worst, part of the conspiracy.
Further (though not that far) down the chain of command it is clear that many people knew these 'detectors' were total bullshit (I believe that was the word used by an Iraqi Lt) and yet more blame must lie with all those who ignored the shouts that the emperor was in fact naked, whether involved in the purchase or not.