You still need downlinks with this. You could have some base stations run by amateurs, but that paints a target on their backs in a similar way running a Tor node already does.
As with Sealand/HavenCo and international waters/micronations more broadly. Even if no country with guns chooses to take direct action, it takes very little--if they care enough--to cut off supplies and any meaningful communications.
Only 11-year-old Libertarians think this way. "Circumventing sovereignty" is the surest way to destruction. Anyone who stands outside the protection of a legitimate sovereign power will be immediately destroyed by a real country. If you fly your shit out in space and declare your satellites to be independent of any flag, I am sure that they will all promptly disappear due to mysterious causes. Likewise, if you believe that you will simply move to a remote floating platform where you declare independence, you will soon discover what the U.S. Navy is for.
Far from just 11-year old libertarians - virtually all Americans don't understand (or acknowledge the existence of) our empire. They think Epstein's private island really was private.