good post argentium.
I saw the side-bar claim that this fellow(s) had found other smaller (bread and butter?) type caches. Still though, this does not bode any proof of the "secret society" stuff, nor validate their TH'ing methods. I mean, they probably whip out metal detectors to "pinpoint" (yeah that's it) after doing their research on likely spots anyhow. Doh!
Bottom line is, there's lots of stories of md'rs finding caches (heck, even farmers and construction workers by accident). So it has no bearing on others that are mere superstition.
Ironically there were more caches found by the early md'rs of the 1960s, believe it or not (despite our fabulous advancements in technology of the past 35 yrs in md'ing). Because the early detectors were horrible on small objects (doing good to get a coin to 3" deep in the 1960s). Yet did just fine on toaster sized objects! So in effect, those obsolete insensitive detectors were actually the better cache machines. Because they were the perfect discriminator against nuisance individuals coins, nails, tabs, etc..... Today however, we pass over those "durned hubcabs", haha. But .... I digress