A blockchain-based cryptocurrency has 3 central qualities: decentralized, permissionless, irreversible transfers. That's what makes it transformational. No othe

A blockchain-based cryptocurrency has 3 central qualities: decentralized, permissionless, irreversible transfers. That's what makes it transformational. No other currency or system can provide these 3 properties (except physically exchanging a commodity, eg. exchanging gold in the real world.) You claim most cryptocurrencies are "effectively centralized", but that is false. For example if I make a Bitcoin transfer by broadcasting it to the P2P network (ie. assuming it reaches most miners), no single entity can block the transaction, thanks do decentralization (ie. many disparate miners around the world attempting to include the txn in their block.)