But when the first reused R values appear, everybody knows that the RNG is flawed anyway. And then fixed RNG code does not help you much to protect transactions that were created with the flawed RNG. Let alone the whole problem of users and their browsers' cache, still executing the broken code.
You can't justify stealing a car because "it was going to be stolen anyway".
That car IMO has in that case become more like a wallet you forgot on a bench in the park. I, as the owner of the car/wallet would appreciate it, if somebody takes it in to safe-keep and leaves a message at the location they took it, how to contact them. Sort of what johoe did.
Also, by posting that there are more flaws to be found at bc.i you just gave the black hats a motivational boost.