I wonder if someone could find stats on how many car-on-car collisions are caused by avoiding a bicycle, and compare that to how many car-on-bicycle collisions are caused by a swerving bicyclist (or any cause, really).
No one is disputing that a reckless bicyclist is a danger to themselves. The question is how much of a danger they are to others, because more people feel more okay intervening when someone is presenting a danger to others.
And then look at the resulting injuries.