When does this move somewhere else concept cease to be legitimate?
I would say such attitudes cease to be legitimate about the time they are expressed. This is a democracy and every(!) citizen has a right to express their pleasure and displeasure at the society we each build. If a person were to say some thing along those lines I would tell them this is my country and if I don't like it I will change it. They are welcome to meet me somewhere in the middle if they are even remotely open minded (which rules out all standard political parties with an agenda based on obtaining a majority instead of finding a middle ground for everyone to live their own lives under). A government/society is something similar to a forest, it is silly to think of it without also considering the plight of the individual tree (the whole point of the Bill of Rights I believe). An example would be position and velocity relating to uncertainty principles in physics. You can't now both position and velocity to a arbitary precision and governments can't write laws which don't have inherent limitations to their applicability to both society and the individual. They are opposite sides of the same coin. The persons who express such monotheistic views are the ones who should move to the most convenient dictatorship...