I think people all just hate each other more now. Generally stress makes little aggressions feel more extreme and the world is in fact falling apart at the seams.
Plus scientific studies have shown people with more bumper stickers were more violent and more likely to commit road rage seeing the car as an extension of themselves and interactions with the car as attacks on personal self and people are much more aware of “personal space” than before covid probably upping the sense of the car being an extension for more people.
I wouldn’t say people hate each other. I think it is more that car dependency is deeply dehumanizing and stressful in a way that leads to violent outbursts that further erode our sense of community and collectiveness. It doesn’t help that capitalism is a cut throat system that primes people to see others as being competition rather than comrades. Together we have become a people of hyper individualist, anti-social consumers… A spiritual sort of rot that is incompatible with the ideals that civilization itself is built on.