> But isn't this awfully close to saying: Blockchains/Cryptocurrencies are useful exactly for money laundering and sanction busting?

Yup.

> And ... saying that publicly _and_ supporting the implementation tends to go very badly. (As it should imo, but that's a different story).

Good. (I don't support the implementation.)

> IF that is the summary conclusion to crypto (which I'm currently holding), then this is pretty close to "no practical value whatsoever", isn't it?

For ordinary people who don't need such services, yes.