You're making a bunch of very weird assumptions about what's going to happen. All of which apply to the formation of literally any new country. You're not making any specific arguments about these structures and why they would lead to this. Your argument is a blanket argument against all forms of experimentation in this regard.

Some people like to try new things, and they're ok taking risks to do so. They should be allowed to do that. If you want to make a rule that says "such and such amount of disclosure is required for people moving there", i'd be fine supporting something like that. But just saying "well theoretically it could be exploited in this way" is not a very strong argument against trying it.