You make some good points there. I would have to say though that people go abroad for all sorts of reasons, not all of them done out of good will. We see here on the forum that sometimes expats who do go to other countries do so out of exploitative purposes. They may talk the good talk when it comes to bashing the crappy side of ESL and the pitfalls of other societies in general. But when it comes to actually practicing those virtues (like not disclosing personal information without permission from the person who gave it to you, or to use that against them for your own biased reasons) even the ones who seem consistent will renege on what they preach.

Immigrants come in all flavors good and bad, at the end of the day some will use the faceless, anonymous forums as an excuse to hide their own insecurities and inadequacies at actually being socially successful in real life.