Think its mostly in peoples minds, never had the problem personally.
Have had comments on my website about having a stab at me on the road & ive no idea what they are on about its in their head not mine.
Reminds me of a bloke at work who did the same comute to work as me everyday he told stories of twats, tailgating & near misses. I did the same route for 25 years without seeing anything of note. All in his mind that other drivers were targetting him.