Yup.
I've been screamed at, called stupid and worthless, not a real lawyer, coward, threatened with death, and all sorts of lovely things by that type of idiot. They think that because the courtroom flag has gold tassles on it that makes it an admiralty flag and through some BS mental gymnastics they think the court can only decide matters of admiralty law. Since the criminal statutes aren't admiralty law, they delusionally think this is a get out of jail free card.
It's an insane bullshit idea and it makes defense lawyer's heads hurt, a lot. It's one of several BS legal fallacies believed in exclusively by morons. I've also had them be completely uninterested in defending against the charges levled against them and instead DEMAND that complaints be filed against the very prosecutors prosecuting them..... Yeah, nuts. Tons of BS. It's all over the place. There are lots of crazy theories from everywhere by people who think they understand law, but haven't a clue. I've had people demand that they be allowed to testify in their own criminal case, and that'd be (foolish) but fine by itself if it weren't for what they wanted to testify to, becuase they want to rant, or exclaim that they are the best behaved little thing you've ever seen. There's a reason the prosecution can't force you to testify in your own criminal trial, but on top of that these fools have criminal records. That's called "opening the door to your character evidence" which means after you claim to be a freaking boyscout, the prosecutor can bring up allllllllllll the bad stuff you did. The reason he can do that is 'cause you opened your mouth and should'nt have......
Basically it's a cluster F*** and everybody thinks they know it all. Nope. I'm sick of it and want out. If you ever get arrested, get a lawyer and listen to them (one that is specifically licensed in your area and who does that sort of thing).