The thing though is that the BTC folks laugh and point at the "inefficiencies" of normal currency--and then use the "hurr durr opt-in currency" argument to show that there is no responsibility to those that get burned.
It's an unfair comparison between the two systems.
Well that is a fair enough reason to be bemusedly annoyed, but I don't see a rational way to jump from that state to "morally outraged" or "angry".
It'd be like being angry at base-jumpers. Base-jumpers can call us "boring ground-whores" all they want, but so long as I am not forced to take up base-jumping then I don't see any reason to become upset. If they eschew the benefits of a life set firmly on the ground, then go splat, it is no skin off my back.
I would not think to ask them how they "dare take moral ground" against a normal risk-adverse lifestyle.
It's an unfair comparison between the two systems.