I honestly don't even feel comfortable wearing earphones when I'm walking in the woods much less on a city street.
It’s a vicious circle, too. If everyone else has an SUV, you also want an SUV so you’re not crushed by one in a crash.
The most likely candidates (again, in my opinion) are:
changes to driver psychology somehow due to the pandemic (empty roads, then full roads again, greater anxiety or stress related to traveling back and forth to work, or something like that)
changes in enforcement of driving laws (the protests of 2020 caused changes in police budget allocations or how police enforce minor laws like traffic laws OR staffing issues due to the pandemic with law enforcement agencies, or both)
A near universal change in how drivers are certified / licensed (could be due to changes in the pandemic or some other factor?)
OR this is a statistical fluke someone hooked onto and we are all drawing far-reaching conclusions from.
Fwiw, many groups are attempting to build self-driving cars it would be easy to produce cars that drove at sensible speeds as an intermediate step. That this hasn't happened says something about how a society values drivers', and drivers rights to break the law versus those of the innocents they routinely kill or maim as result.
It really is not just that. The netherlands didn’t fix their traffic by telling people to drive better (in fact they did relatively little of that), but by redesigning the entire driving conditions around the results they wanted.
Properly incentivising, and taking advantage of human psychology for other reasons than exploitation, is much more reliable than scolding people.
Getting stuck on “it’s people!” will be largely ineffective, because it’s not how people work. Though if your only goal is to have something to moan about, carry on, that’ll certainly keep.