The graveyards are filled with people who had the right-of-way, who died knowing they were in the right.
And even if it's a slow speed accident, who cares about being right if you get a disability in the process? It is safer to let them through so they don't plow into you when you have to suddenly stop.
The only reason to LARP as a highway cop is just ego.
Sure, you can hide and worry about protecting yourself in an ever more dangerous world, or join people like him and me and take a stand against bad behavior. If enough people do it, it will make a difference.