Generally, losers learn it at home. They can generally also learn to be chill people when removed from the environment that allows it, which is why people are usually so aggressively pushing therapy on the dolts and they end up claiming absolutely insane shit that “I did therapy once and it made everything worse”
They gotta get out of the shame/self hatred hole and can’t do it themselves and it’s really easy to turn shame into anger at others, rather than the actual fix of turning it into acceptance.
I don’t want to disagree with your experience but I did want to inquire if are you in the wealthy areas during the morning commute times for their work? Most of the bikers I see in Denver are either retired MAMILs heading to the greenway trails for a 40-60 mile exercise ride or the health conscious tech/finance bros who are heading to gym then work at 6-7 AM. Then you get the next batch of wealthy dads on their $5-10k minivan-esque cargo bikes at 7:30-8 AM, then it goes dead until the evening commute. At the end of the day you then get the group rides like critical mass rolling through. The wealthy/poor divide on bikes is always interesting: If you’re poor it’s seen as “Broke ass can’t even afford a car” but the rich treat it like the people in the 2000s treated owning a Prius, and the people who show up to the city council meetings treat it as such.