Small point of info Goff - the great majority of MDers don't seem prepared to accept the Code of Practice and are carrying on as before - in fact they wrote their own rival Code in retaliation which basically says Sod Society though it still talks about responsibility - enough to wave quickly under the nose of the next unsuspecting farmer they target.
Even the most uncaring geocacher can't be compared with them. Only if geocachers took bits of the monuments home with them could they be said to be acting in a comparable manner. I might employ a geocacher as my Under Butler. But a detectorist - never!