> Only relevant for crime
Absolute nonsense. There are people who prefer paying with cash for the same privacy advantages.
> Also possible with many banks, VISA, Western Union. The fact that you're using an intermediary is irrelevant
Sending crypto is way easier, faster, and cheaper than sending an international wire transfer or Western Union transfer. With crypto, it is peer to peer and no one can censor you. In the traditional finance world, anyone can have their bank account, payment provider, or transactions blocked by their bank, payment provider, government, or any of the other countless middlemen who need to approve of your transactions.
> In practice, it's far more centralized
Peer to peer money and self-custody is more decentralized than holding money in any centralized institution.
> Doesn't really mean anything
You clearly don't understand the concept, so please educate yourself before you comment. The composability of smart contracts is what enables defi.