It only takes one person with a grudge/mission/objection to take you down...
While it was stupid - apart from the "scare" the other driver got and the damage to the pole, no harm was done..
Had he hit the other person then it would have just been another reckless driver - he would be busted and the cops will have caught another "bad guy" - case closed.
The complaints and follow up was a bit stupid and pointless really.