So what's Thomas's point then? Do they mean to say that jurisdiction attached to soil is a feudal concept? Wtf? What IS the US jurisdiction then? Is no one under jurisdiction because there are no feudal lords obliged to serfs? What a load of nonsense.
Jurisdiction has multiple concepts, you are thinking of territorial jurisdiction. There is also personal jurisdiction, feudal jurisdiction (serfdom), political jurisdiction.
Thomas is reacting to Roberts. Roberts spends time talking about the king's obligations to those born on their land. There is also each person's obligation to the king. Roberts wants to say "we inherited common law, and under common law everyone born on the king's land immediately came under his jurisdiction, the king owed things to these people immediately (and the people owed the king)". Thomas is saying "no kings".
> What a load of nonsense.
Or, this is a complicated, multi-layered concept that goes back through 500 years of common law. It will look messy.