That's funny. Moving to a different country is a complicated and long process. It can take over a decade, require thousands of dollars in expenses and hundreds of hours of work. Investing in another country's stock market takes 5 minutes and you can do it on your phone. Shouldn't it be "feel free to buy a different index fund if you're not pleased with the growth in your country's index," instead of "feel free to relocate if you're not pleased with the quality of life where you currently live"?
That’s an incredibly dishonest put-down certain sort of people use.
For one thing, it’s not exactly easy to move to another country, not since World War I. You can’t simply pick a country and move to it - and you full well known that when you dismiss somebody with this sentence.
For another, I like my country. And I have every right to not like where it’s heading. “If you don’t like my politics, emigrate” is preposterous.