That's a lot of people and bustle for a young GSD. They tend, as a breed, to be very oriented to their people and not a fan of extra folks. It sucks for the dog, but if he's comfortable in DE, and knows the staff in that house, it's probably the right move.
The Bidens have had one of their GSD's for 12 years and the other for 3, and both were gotten as puppies. Not sure where you think it was a publicity stunt.