In most places I’ve been, no, but I’ve noticed that they do use the horn more on the east coast

Its common all over the world tbh but you mostly see it in big cities

Yes, I used to work in a building in downtown SF that was “historic” (old) with windows that actually opened, and every week day starting around 4pm we’d all close the single-pane windows to slightly quiet the irritating honking that was 17 stories below us. It was still audible but a good pair of headphones had a chance of being successful.

All it ever took was one person’s honk to start a chain reaction that would go on for hours.

People honk way less in America than most other countries I’ve been to

No, this is mostly a Hollywood thing to indicate that the traffic is real bad and the driver is real mad. The reality is that birds aren’t allowed to drive, and probably wouldn’t even want to.

The horn is the forbidden button, I’ve only used it once in my life. Although I do wish we had like a “friendly” horn I could honk if somebody left their blinkers on, or their gas metal plate thingie open…