I don't understand this assumption that crypto transactions are nobody's business. That's a feature of cash payments, which from what I understand can only be emulated in crypto by transferring control over a non-custodial wallet, which is cumbersome to the average person.

If you're crypto banking with a third party that muddles your wallet's transactions you've already added one of the institutions you claim to be against.

If you transact on the blockchain, you're broadcasting who your wallet transacts with on levels that are far more publicly transparent than how fiat is traded via institutions.