The waves of Tesla buyers can approximately be summarized as
Environmentalists
Tech nerds
People wanting to show they have Tesla money
Fans of Elon Musk's conservative political stances
Each step has seen the brand increasingly more associated with jerkasses to the point that at this point I'm less likely to assume a BMW driver is a jerkass than a Tesla driver
From my time in Japan, the driving manners there are a world away from other western countries, but I think the difference is marketing and customers.
For decades BMW has been marketed in the angloshpere (US,UK,AUS,NZ,CAN) as The Ultimate Driving Machine and this has attracted the type of customer who see themselves as would be race drivers. Every car trip is a race and every other car is a competitor who must be passed.