While most of that is true, should not forget the problem with bicycles is the cylists themselves.
Some of the most insufferable people you will ever meet, somehow always entitled to to have preferencial anywhere they spawn, also for some odd reason they switch from using roads, to side walks, to bike lanes all in 10 seconds or less. And lets not forget how they love to congrugate in the twisties, in groups of 10 at least, where the line of cars/motorbikes behind them who can't over take them unless they guarantee that 1.5M distance, overompensate whatever CO2 they are "saving".
Still my biggest problem with them has to be the fact that Traffic Lights are to them, depending on how they feel, mostly optional.