It is my opinion - based upon driving in different states roads, back roads, and interstates since 1974 and listening to truckers on CB - that you truck drivers are the second most incompentent - and ignorant bordering on stupidity - drivers on the road. Cab drivers are the first.
The decline of good responsible behavior is across the board, in all walks of life. A nation with an ever growing populace, that wants dead babies and sexual perversion to be the accepted norm, has dangerous people everywhere. The road is one of those dangerous places. The smartphone is surely the deadliest weapon on the road today.