The moment the cops pulled him over, he was no longer in a self-defense scenario and didn't need a quick-draw to protect himself. He needed better cops (which he wasn't going to get) and a manual safety that was engaged.
You absolutely do not touch your firearm once engaged with police, that is insane, engaging the safety at that point is not an option.
The point of conceal carry is to be at the ready, not to have to go through a process before your firearm can be useful.
One can train with a safety of course but as I said it adds to the complexity and possibility of more error.
There is every reason to expect a cop to know better and we need to demand that more than requiring everyone have a safety always engaged anytime a person carries, that is getting into 2A territory.