It can be different regionally too, where I'm at now everyone honks all the time so a little honk is a fine courtesy if you don't see the light change, where I moved from though it would come off as screaming at someone on the street.
But meanwhile as a cyclist if I pass someone and they give me extra space we can smile at each other and wave, or if I have to 'honk' it's a little polite bell. But also I semi-frequently have times where I think "that car could have killed me" and I continue my commute unfazed. It encourages an entirely different mindstate than car-brain.
The first time I can recall someone not my brother giving me the middle finger was my first time driving on a real road, and I wasn't even in the wrong ahah.