The idea of the unaccountable person is most dangerous if courts cannot function and laws can't be enforced. Before Trump was President I saw an appellate brief written pro se (meaning drafted by the defendant instead of a lawyer) that made the sovereign citizen argument. I have since seen a bunch of versions of it and read appeals courts decisions responding to it. My understanding is that they don't think courts have jurisdiction over them and they are not subject to laws they are prosecuted under. It is one of the few guaranteed ways to lose an appeal.
One version claims that if the courtroom's flag has fringe on it then the courtroom is really an admiralty court and they can only be prosecuted for acts committed on the high seas. Another version invokes the Uniform Commercial Code, which dictates the terms of contracts for goods. I can't remember what they claim the Uniform Commercial Code says about whether they can be prosecuted. On its terms it literally sets rules for contracts involving commercial sales of goods.
We are still at the point where regardless of political affiliation no Judge would accept this argument, though it's troubling that its general ethos has become absorbed by a lot of people. Likewise the arguments made by Trump's lawyers yesterday in NYC which I might write about later were also frivolous. He really does himself a disservice by not hiring good attorneys.
I'm hoping we don't get to a point where partisanship can erode even the most basic understanding of the law and how it applies. I suppose that the mainstreaming of science denying arguments show how easy it is for the truth to be lost and for people to give into wish fulfillment thinking.