I do not doubt that state governments in many Southern, Midwestern, and northern Rockies states are quietly setting up plans for dissociation from Washington should the Democrats repeat what they did in 2020. The cheating will be way more obvious and over the top than it was four years ago. If the state National Guard units follow their governors and their legislatures and ignore the Pentagon, then the Federal government will have real problems enforcing the decrees of Biden, or his possible Democrat replacement.
That being said, the fact is that the Supreme Court said nothing about state banks being able to issue their own currency, as was the case prior to 1864. The ruling discussed the applicability of state law to nationally chartered banks. While Federal law prevails over state law, state laws can be enforced on National banks or Federal savings associations as long as state laws do not restrict the authorities granted under the Federal charter.