Like cash except you can use it at crazy scale, so worse than cash when crime is considered.

That's why it's paramount for LEOs to go after people doing the bad deeds instead of simply banning a whole monetary ecosystem, just because it's easier to do.

If you ban a coin, instead of persuing the actual criminal, then you're both doing a disservice to honest users of the coin and leaving the bad actor to do harm to society in some other way.

There are only 8B people in the world - they all fit into a "box" of 2k by 2k by 2k of humans.

It really isn't that hard to know who's doing bad things to others, especially with current technology.

No, it's exactly why that works.

Criminals used to meet in person to discuss crime (because mail/phones can be intercepted) and meet in person to move cash. It was a hard limiting factor on what they can get away with. With e2e messengers and anonymous crypto both of those "issues" are fixed.

Do you know anyone who uses it for legit purposes? I don't. I bet you ban a coin like that and you kill orders of magnitude more crime revenue compared to .001% of honest users using it to send money home and save a few dollars on the transaction.

It really is hard, because time isn’t addressed in the idea.

It is an evolutionary process, with incentives are high enough for both sides to keep finding solutions.