Complementary currencies have been in place for thousands of years in human history, and it was largely for the benefit of the societies and their individuals, for crisis development, transitional economies and/or commons-based communities.
Blockchain is a great tool for this kind of money. Saying something like the whole of the crypto world is a scam is a gross generalization that has nothing to do with reality, as much as fiat money isn't a scam because of the corruption, scandals and crises we have been experiencing in the fiat system.
If you want to bribe a person or something, then the least thing you need is a decentralized network like a blockchain where all the data is stored across the network on all nodes. Crypto "enables corruption on a scale unseen before" ?THIS is BS.