You didn't encourage speeding, but you did suggest that cars were somehow inherently dangerous to bikers. As opposed to the behavior of the people inside the cars being dangerous to bikers. You also suggested that this is a problem that cannot, or need not, be solved by "should" rules to change that behavior. I agree that people are free to decide to have a car, but they absolutely should behave very responsibly with them. I also agree that creating a more welcoming environment like this will encourage more people to make the free choice to bike, we don't need to force them.