I mean, this isn't much different than the true believers in the liberating value of cash. And, at large, if you meet someone carrying 100s of thousands in cash with them, you have met a criminal. :D

Just like if you have a small vendor that takes cash only, they are probably tax avoiding. Buying drugs? Heck, even legal drugs for some states require cash.

I'm also still highly amused at just how inappropriate blockchain techs are for crime. It is literally recorded basically forever.