I funny think any of those guys would listen to a straight “You’re wrong.” Maybe it would be better explaining that they didn’t do their incantations quite right. Like “Oh, that license plate can’t be accepted because it’s black letters on a white background, which puts it in the domain of the department of commerce, who have no jurisdiction in automobile accidents.”
I rewired a police station once. Literally the only poster they had up about groups to watch for was about SovCits, exactly how their nonsense “worked”, and how to handle them. It was pretty amusing, as an anarchist who wasn’t keen on that particular job.