At least you can be certain the Americans who are disgusted enough with their country to make the non-trivial effort of uprooting themselves are good folks, and they’ll be a net positive for whichever new society they choose to become part of.

Yeah, there are lots of really awesome Americans out there. 

Unfortunately there are some incredibly shitty ones who have managed to get control of everything. 

There are also a lot of otherwise decent Americans who are propagandized beyond all reason. The machinery for manufacturing consent in this country is sophisticated and very well funded.