They are all good points that were brought up in the video, however, I was disappointed to hear such a condescending tone from the officer.
The guy clearly didn't understand the law, but was very respectful and open to learning. The officer had the choice of returning the respect shown and educate him in a genial way or display his dominance. He chose the latter. There is an inherent power asymmetry in any traffic stop and unfortunately the officer chose to reinforce that asymmetry with his disrespectful tone.
His comment "That's a $500 fine. If you have $500 to spare, I'll write you up right now." could easily have been rephrased to "You're actually not permitted to do that under California law. It's a fairly substantial fine, so I wanted to make sure you understood the rule."