1) If you are that perturbed by splitting stress, don't split lanes. That car was not close enough to deserve a kick by SoCal standards. A-hole drivers encroach on the split every dang day.
2) If some driver tried to crush me like I think I would react with far less control than shown by the biker. Far less. No doubt about it, he would not be standing and glaring with his hands on his hips like in this video shows at the end. No way.
I'm gonna guess that this was being recorded because of stuff that happened back down the road, and we no have no clue what that was, or who started it.
Here is a litlle longer version.
Outrageous behavior by the car no matter the prelude. I like how ordinary citizens run up from cars stopped ahead and place themselves calmly betwwen the car driver and the biker. I like how the biker disengages.
I think in the USA, especially in states where folks are CCP, someone would have been shot, maybe killed. Brazil, this was in Brazil, separate, chill, let the cops come in. Nice. At least in this case.
Me, I would have had to been torn off the car driver and I would have dragged him out of that car by his neck, wrong but true.