This is tame for Niagara. It’s common to be given the finger when they cut you off or do something stupid, not the other way around. I call it the pre-emptive strike with the soul purpose to flabbergast the other driver into giving no response.
As a rage story, my wife was hit in St. Catharines on an off-ramp. I sped home to comfort my wife and in the process pissed someone off. This person chased me from Highway 20 on the QEW to Victoria Ave just outside of Beamsville… We hit and sustained speeds over the posted limit and multiple times he drove on the shoulder becuase i braked hard…