You're the one calling those that give up their citizenship for more freedom "scumbags". According to your definition Washington was a "scumbag". I think no one is a scumbag for their choice. Those who choose to stay and have their freedoms eroded are not scumbags, they just don't mind being controlled. Those who choose to move are not scumbags, they just want more freedom. Washington was not a scumbag, he fought for the principles in the Constitution.
People can move all they want, and George Washington never renounced his American citizenship.