I know I'll get flamed for this but...
IMO that rider failed to TAKE the spot behind the truck when it was wide open, giving the bitch the opportunity to cut him off. Then when she does zoom forward he suddenly wanted to fight for it and cry victim. Boo hoo. Somebody call the Waambulance.
If you're going to LET them cut you off you might as well just tuck in behind before you create a road rage incident and get yourself hurt.
That vid should about situational awareness, knowing the car is there, and either taking your spot when you have the chance or laying up and tucking in behind.
He was expecting it to be given to him, while the proper / polite thing for the car to do, is not the correct mindset. Wake up Squidward!