Yes, it's unfortunate and might not help on controlling criminality. But I sense that with time, people will more and more get used to transact in other values besides USD. And crypto will enable this at world level.

I have done this already this with friends, so, it's a matter of time for this to start happening in every business.

People forget that in some places in the world, you still transact using fresh food (instead of money). It's not a common thing, but it gives a perspective of how a paper with a private key (encrypted QR code for example) could impact on places where not even cell phones exist.