That article is true to my experience. In my case, I spent more time informing the Judge about section 800 of the criminal code than I did speaking about the case. In the end the judge wasn't particularly convinced until the prosecution read him that section right out of the book and reminded him that I'm right. As which point he played the game of asking me to step behind the bar. I asked the person I was helping to do so as well as the court was showing prejudice against him without my support. The games ended at that point and the judge decided he'd rather not waste time and get it over with and let me be his agent. Halfway through the case a new prosecutor took over who I had to explain that section of the criminal code too. She wanted to speak with him in private. No way hosay. It takes nerves of steel to deal with what the government in this country will throw up against anyone who doesn't want a lawyer to help them.
That being said, I enjoys me some anti-authority moments, I'd do it again in a heartbeat. But if you aren't willing to stand up there and literally tell the judge they are wrong and you know more than them, you won't get anywhere. And it's a rather weird feeling when you do that and win. More than once. Kind of reminds you of the fact that Judges never do have to be lawyers, nor have any law experience, to head up that position.