There's yet another example of your pig-headedness. That is simply, not completely true. It is true that the USSCT claims that it is the final arbitrator, and that most judicial and policing authorities act upon a general acceptance of that claim, yet not everyone does nor should accept that completely.
In the not-so-distant past -- as many have attempted to have your tin-ears hear -- that claim of sovereignity over the Constitution by the US Supreme Court was not so generally accepted, it was rejected, counter-claims of authority are made, have been made.
The very first words of the Constitution say WHO owns the charter! Who is sovereign over the Constitution. And those are not "The Supreme Court, in order to ...", they are "We, the People, in order to ..."
From a practical view of good order and clear judgement in the Courts it is not clear at all as to why a SOLE, unchallengeable, arbitrator of Constitutional authority is needed.