In theory, but it doesn’t in practice. Most crypto transfers never make it to the blockchain, they happen entirely in SQL databases of exchanges.
Also, Tether has complete control over USDT and can block or reverse any payment or freeze any account it wants. No bank or payment processor in the world has such centralized control over the traditional financial system.
If anything, crypto is more centralized by comparison. Both in terms of payment processors as well as wealth distribution.