I've looked (and laughed) at the Sovereign Citizen movement a couple of times over the years... it's hilarious seeing them look like morons in court!
Granted, laws are built upon one singular presumption - that any individual should be bound by them. (and that basically comes down to the use of force - i.e., the police). I don't think that can be 'established' anywhere - except as a proposition. At what point did you ever state that you accept the laws of the nation/state you were born into? Somehow, you don't have the right to reject such things. You are forced to submit - on fear of punishment. (I've heard that the Supreme Court in the US has chosen to ignore hearings into the legality of taxation).
However, the SC movements all think they know the law better than the actual lawyers, and that only *they* can decide what laws apply to them - which means, they've actually decided that they are bound by the laws of the land (negating the paragraph and argument above).
It's hilarious watching some idiot try to say that they are only under the jurisprudence of maritime law, because of some symbol that looks similar to another symbol is hanging on a wall! I've also seen & heard them sprout crap that the only law that relates to them is from the Magna Carta... What makes some of them even funnier is that people from different countries are using the same tactics - with the same level of ignorance!
Don't get me wrong - I *do* appreciate the argument that laws can't be forced upon someone as a matter of course from some other entity (just as you can't be held responsible for a contract or agreement that you weren't party to). It's a BIG argument! And difficult to refute (without merely going back to a simplistic "because that's what the law says"). However, that's not what the movement does...
(It's sort of like one country trying to claim territory from another country because of something that happened a LONG time ago, and expects everyone else to go along with it... including and especially those there now! It's especially funny (or not) when such claims have only recently come into being, and ignored for so long before that)
As for this guy (who apparently wasn't the father - but maybe a nephew - of the movement) being a 'star seed'... possible, although I would think it's not because of the SC stuff, nor the language stuff. If he was 'planted by the Federation' *, then I'd suggest that they're wishing they hadn't... or that he'd wake TF up!
(*anyone remember Blake's 7?? in that series, the Federation were the bad guys! Literally wearing black, with big gas/face masks... except for Servalan, who usually wore white! Short black hair though...)