I'm sure lots of cyclists have anecdata about that hatred. My personal favorite was somebody in a Santa Clara neighborhood a block from the DMV shouting at me to "get off the f***ing road!" Clearly they didn't read the part of the DMV manual that mentions that bicycles must "not ride on the sidewalk"[1], and missed that cyclists are allowed full use of the lane.
I now live in rural suburban Michigan, and even on these rural backroads I have jerks in trucks yelling at me on my e-bike going 20+ mph to "get out of the f***ing way".
Maybe those people do not represent the majority, but it feels like they do, and those actions feel threatening when coming from a multi-ton vehicle directed at a 75 pound vehicle. (Fat-bike ebikes are heavy.) It's also odd to experience this on a rural road on a lake shoreline because isn't the countryside supposed to be slow paced?
1. https://www.dmv.ca.gov/portal/handbook/california-driver-han...
My personal favorite was someone shouting "go back to California!" our their window. I'm a TN native born and raised.
Second favorite was, a truck did an illegal pass maneuver around me on a blind turn (another 15s and we'd be around the curve) and almost hit another truck head on, then raced off. The driver of the truck that almost got hit rolled down his window and asked me "do you really have to ride here?"