But there is a collectively hashed-out social contract you accept by staying, and it should be of no surprise that the law takes that contract as table stakes and acts according to it.
Comparing your financial scheme to Jim Crow isn't the most distasteful thing I've seen on HN, but it's up there!
It's not my financial scheme, it's the social contract.
Comparing that to hiding your financial transactions so you avoid KYC is genuinely embarrassing.
Granted, that's assuming you're a valuable enough contributor to society that you'll find another country interested in taking you, one that won't similarly have expectations around "people in a society should pay taxes", but that's a you problem.
Or you can choose to live in a country that has a tax treaty with US; either way you get to deduct local tax rate paid so you're not double taxed.