Earlier quoted context omitted.
From "might makes right" is Tongan because the Tongans were able to take it. From the perspective of homesteading, owning the fruit of your labor, etc I think you can argue since the Minervans both made the island, homesteaded, "discovered" (didn't exist until they made it), and claimed and were actively using it they have senior property rights (you can argue any of these individually but in summation it's quite wei…
If you can't defend your land, somebody else will eventually take it. That's kind of why governments were invented in the first place.
(2) Yes they were militarily weaker than the entire coalition of australia + polynesia under the flag of Tonga for invasion, this applies to pretty much all sovereign islands in the Pacific, there is no particularly special lesson to be learned here about polynesian military might -- even the Tongans were ultimately proxying Australia and would find the same fate if Australia disliked their political model.
(3) The takeaway Michael Oliver did actually learn (dude was a legit genius) from this is if you find any success "democratic" countries that preach tenants of peaceful property rights actually are just frauds running under the cold veneer of "whoever can kill and steal, gets the land."
(4) The next "adventure" by the same foundation used lethal force to defend themselves (Vemerena), and IIRC it did survive a bit longer. (There were three major attempts by Phoenix foundation, one was making a new island island, another a civil war-ish breakoff nation in Vanuatu, and another an attempt at civil democratic secession in the Bahamas-- the one defended by armed actors was arguably got the closest to success)
(5) Thus ultimately we can see the property rights model of modern democratic countries are no better than the founding libertarian models, it's just violently taking whatever you can get away with whenever you can get away with it wrapped up under more flowery language than what the libertarians used and with generally higher tax rates. We see this continually whether it is libertarians or communists, the bigger democratic countries will just fuck their shit up as a mode of political alienation whether they have a "government" or not.
(6) Conclusion is duration of survival of small territories of Minerva, communists, et al has little to do with their philosophical model of property rights. Has more to do with forming allies (Cuba with Russia for instance) and/or military might. None of which is philosophically incompatible with the Minervan model of minarchism.