> That said, obfuscation per se is not illegal in most jurisdictions.

And it can't be, as long as fiat money exists. There's no tracing involved in passing notes around. The only times fiat transactions become suspicious is if you try and cross a border with a lot of cash or valuables on hand, which is where crypto comes in because it knows no borders. This makes law enforcement nervous.

I'm sure that besides crypto there's many ways to move large amounts of money or valuables across borders though. The rich do it, they just set up shell companies and pay licenses for intellectual property, paying a token amount of corporate taxes.