I do not agree with that. However, cryptocurrencies were created specifically in a zero-trust environment to circumvent financial regulations. Now, granted, this isn't the main use their creators had for them, but by now the positive uses have been far outweighed by negative ones and as a result cryptocurrencies should be considered an interesting but failed experiment.

I'm old enough to remember malware existed for its own sake, not to make money out of ruining public or semi-public infrastructure.