Better title "Judge rules Snowden signed contract to give all book proceeds to US government". USG is not appropriating his proceeds just because he is accused

Better title "Judge rules Snowden signed contract to give all book proceeds to US government". USG is not appropriating his proceeds just because he is accused of a crime, they have been given it by a judge because Snowden signed a contract to that effect. If he had signed a contract to give book proceeds to Elon Musk or Katy Perry then presumably the judge would have upheld that too.