Yes. It's not a compelling argument that something can be used well for crimes. If cryptocurrency is just John Wick tokens, it not only isn't useful to most people, but further it's anti-useful to society in general and will likely be suppressed.

It's also hard for me to understand these "payment outside of X authority system" ideas when the value shifts so wildly and so unpredictably. No one wants to get paid, not even criminals, in a currency that might be worth 20% less tomorrow, depending on what's going on with Matt Damon's Super Bowl ad for the criminal currency or whatever.

Right, doing illegal stuff is the killer app is my point. I don't know if it's a net positive either, but it's a positive for some users. I hope it's clear I wasn't advocating for any of these things just pointing to successful applications of the technology