That doesn't sound very decentralised.

nothing about crypto is decentralized. it's verified by enormous mining farms, who contribute hashes to centralized pools, all stored on one central ledger, and interfaces with the fiat/legit financial system only by using that very financial system.

oh, and three acounts hold like 25% of all btc in circulation.

crypto can do some things, but decentralization isn't one of them. just ask Coinbase

USD tether is barely crypto at all, it's a wrapper around treasury bonds which the US govt. regulates