There is no controversy regarding the fact that the guy was totally in the wrong to brandish his firearm. He is a dolt and he will get what he deserves.
But let's not try to excuse away the behavior of inattentive, distracted drivers who are also a major public safety issue. It does not take a highly skilled observer to be able to determine when a driver is paying more attention to their cell phone than the road. They typically are driving BELOW the speed limit, often times in the far left PASSING LANE, and weaving from side to side within the lane (or slightly over the line) while texting, reading email, Facebooking, who knows. And it can, and often does have tragic results. I would not be surprised to find out that this was the case with the driver who took the video of the brandisher.
