PAS, what the Public thinks "is not our responsibility"

I wrote to  Roger Bland (the Keeper, Department of Britain, Europe and Prehistory, as it said on the footer of the letter I got back, so I do not know who'd you have to write to to get a reply from the Head of Portable Antiquities and Treasure these days), commenting on Culture Minister Vaisey's misuse of PAS statistics to encourage artefact hunting on archaeological sites. This is my response to the Keeper's dismissive reply, in which he denied of course any responsibility for what British politicians think about "portable antiquities":

I rather think that a public outreach organization that cannot even inform the Minister responsible and his civil servants is also failing to reach other areas of society with an archaeologically useful message. That is the point. When will the PAS be getting the message across that reporting a few of their finds does not make hoiking archaeological finds out of a finite and fragile resource of archaeological sites and assemblages anything that we should be complacent about or encourage/condone?

I think we may legitimately ask the Keeper, just whose responsibility is it keeping the executive branch of British state administration informed about what Treasure hunting does to the archaeological sites these objects are hoiked from? Mine? Everybody else's except the 50+ people employed by the PAS at considerable expense to do public outreach? How about the PAS pulling its weight a bit?