OK, but a few points:
1. With the possible exceptions of
Bir Tawil and a slice of Antarctica, every piece of land on Planet Earth is claimed by some government.
2. Most governments aren't as savory as Singapore's.
3. Singapore still issues (or not) a Singaporean citizen's passport. If you don't like Singapore's government and its power over you, you have to ditch the passport, too.
There's only one reasonable, logical, rational solution here if you're concerned about policy risks: take advantage of the opportunities you have,
including CPF
and other attractive opportunities, "off shore" and "on shore." Diversify. You're going to face policy risks no matter what you do, in every aspect of your life. Sorry about that.