Btw, crypto (like bitcoin) is only an alternative because of convention.
The complete history of bitcoins is globally trackable, and people could all decide that they'll pay more for bitcoins that came from Satoshi's initial hoard, or that they'll refuse to accept bitcoins that were ever seized by the FBI.
(Yes, there are mixers. But you'd just refuse to accept any bitcoin that took part in the mixer transaction, if any FBI coins were in there.)
Hence my restriction to crypto that is 'like bitcoin'. Yes, you can use some tricks like zero knowledge proofs to make untrackable crypto-currencies. But as far as I can tell, they aren't all that popular. For currencies that offer both stealthy and 'regular' transactions (I think like zcash), the vast majority of transactions are of the latter kind.