Let's ignore everything else. They're buying a private island, that would generally mean that the island is already part of a country, in which case it isn't ma

Let's ignore everything else. They're buying a private island, that would generally mean that the island is already part of a country, in which case it isn't materially different from buying a few hundred acres in rural Montana or some such. You aren't creating your own country, you're still subject to the laws of the state the island is part of. So I'm unsure if they're confused, or it's a scam. Certainly no matter what they may think, they don't get to choose their own age of consent.