That's true, but at the same time let's not downplay the ways that self-custodial crypto may be a bulwark against authoritarian governments. I am not labelling Canada an authoritarian government by any means, but widespread self-custodial crypto would have made their response (freezing bank accounts) far harder to pull off.
Doesn't matter. If the FBI has records of you transferring money to an exchange and then you claim it just "disappeared" after reaching the exchange, they're going to roll their eyes.
The crimes in question involved real estate deals with paper trails. They also have transcripts of conversations where the partners acknowledge what they're doing is wrong and could potentially trigger an FBI investigation.
If he had kept the money in cryptocurrency then they’d just imprison him until it was turned over.