That's good and I agree (and sorry if that came off too antagonistic).
It occurred to me that what I was responding to was actually the notion (which always comes up in this duscussion) that an appropriate response to a discussion of "How not to kill cyclists" is to say "well, but they shouldn't do this thing that annoys but really has no effect on me".
Except it does. An intersection is one of the worst places to be "pulling a maneuver." There are too many things happening from too many directions, and vehicle and pedestrian traffic are intermixing.
The base reason we have traffic laws is for safety. A good part of traffic law is flow: direction and speed. Anything with a wheel is a vehicle, and all the vehicles are using the same space. When you have all that lethal metal (and bikes are also lethal metal) moving around, it all needs to be going in approximately the same direction and following approximately the same rules.
At an intersection, you have all these things ... intersecting. And now you throw a bike into the intersection, moving across expected flow. It's unnecessary risk for everyone at the scene.
It only has no effect on me if everyone is lucky. But it still adds risk, to me and everyone else.
But in general, we're all ambassadors for our different communities.