what if they're actually Thanos? what then?What if they are considered nonviolent with the officer but go around the corner and pull a gun and take a hostage because they know they are going to jail for a while?
sorry, this one was a funny concern.
the rest...meh. ok someone stole a car. you don't have to deal with it in the moment. and if you're pulling over a drunk driver, you have a taser, so use it if you have to. none of these are convincing cases for cops needing to have a firearm for a traffic stop.