Cyclists take the lane and "block vehicles" as a safety measure, not for some hatred of cars.

"...cyclists drive in the middle of the lane because it actually protects us against the most common motorist-caused crashes. Our top safety priority is to ensure vantage and visibility (to see and be seen). Bicycling in the middle of a lane is our #1 tool for defensive driving."

Explanation: https://cyclingsavvy.org/road-cycling/