The last paragraph sums it up perfectly.
The King can take what he wants. In 1840 Kew Gardens, originally in the ownership of the Crown, were handed over to the public in a remarkable act of philanthropy. The reclaiming of the statue of Hercules is an act of reverse philanthropy. It’s tiny enough in the grand scheme of things, but small gestures sometimes carry larger symbolism.
For the few, not the many.