Are you experiencing issues? I am. Someone, usually in a big pickup, is always filling my hatch window.
If "they" teach following distance, it isn't showing up on the road. I'll move over, or accelerate out and around to get the tailgater off my tail, and they will close up on the rear of the next vehicle and squat there. This often happens in the left lane. You will see a string of closed up vehicles behind someone loafing along at or below the speed limit. I think that most of them must be on their screens.