This is like hardcore libertarians, anarchy-capitalists. If they were dropped into a stateless (failed state) area, where they would have complete formal sovereignty, any but the super wealthy (who could afford private security, water and food quality systems, etc.), would soon leave, become impoverished, or die tragically at the behest of other legally unencumbered "self-sovereign" actors.

The excuses they might make, that libertarianism requires some basically supportive context (provided by who? and in what system?) to get off the ground, also undermine the arguments of the hard-independent individual crowd.

(I happen to think that "libertarianism" is a fruitful collection of ideas and insights, but in the context of many other systems with complementary ideas and insights. On a practical level, we need the best of many systems working together.)