Using your logic when a LEO makes a traffic stop they should ALWAYS draw down on the person in the car and write a ticket only after hollaring at them and waiving their gun around. I have been pulled over something like 4 or 5 times since I got my license, a couple were speeding, 1 was improper passing on the right and another was to quote the officer "blowing through a blinking red light" I was never pulled over at gun point and yelled at by the officer.
Any situation an officer pulls someone over is possibly dangerous, they could knock on your door to ask you if there has been a stray dog in the area and if you're a criminal you could freak out and open fire on them. A Police Officer is responsible for judging the danger of each situation and responding appropriately, this guy didn't try to evade the police, he wasn't running from them, he wasn't threatening the cop or pulling a weapon, he wasn't dragged off in cuffs because he had warrants. There was nothing to suggest this event was dangerous to the LEO's or two any bystanders.
Maybe the next time you have a run in with a LEO they should draw on you and you can decide if it's a good feeling or not.