This forum helps a lot users with problems. We're a kind of customer care lol.
Garmin is converting to LT policy and sells Nuvis with lifetime free upgrade, so our maps sharing is not so bad at the end.
Garmin is also interested in producing maps in every countries by its own and restrict its compiler sale to few mappers, so I think they dont mind about maps sharing and unlocking methods.
Garmin, most of all is interested in selling devices. Forum users are good testers and report bugs, on maps and firmwares.
Additionally most of forums Garmin fans buy new models coz they can toy with them if maps are available
Sharing also isnt intended to make forums' users to earn money and shouldnt let users to sell anything, devices thieves on the contrary try to resell stolen devices.
I think you wont find help in removing nuvi's PIN lock anywhere in forums.