What a shame for the pilot. I can sympathise having had 2 headsets, a GPS, an EPIRB and some other stuff taken from my aircraft while it was in the hangar at Bodmin a few years ago and am far more security conscious these days.
The decision about security of a landing site is even more pertinent in the rotary world where most landings are made off-airport.
This weekend I am in Wales by R44 and the choice was the local school field of the small town we are staying in or a small hotel 20mins away right out in the sticks. Security issues figured significantly in my decision and I chose the hotel.
A small minority of the populus inevitably manage to destroy our faith in the inherent honesty of human nature.
My solution - cut their knackers off.
SB