Earlier quoted context omitted.
The difference is, crypto makes irreversibility a fundamental part of the system, making it impossible for any party to unilaterally reverse a payment without having to first take over the entire chain. With regular fiat money and banks, such reversals are perfectly possible on a technical level. The banks are usually unwilling to do them, and an individual may not be able to force them to in practice, but it's still…
This seems like the correct way to go though.. if you want reversibility, then introduce escrow into the situation, the foundational building block should be irreversible.. as there's no way to make a means of transfer _more_ irreversible if you're inherently giving control to a 3rd party with no choice.
So introducing another third party to trust makes it more complicated than the alternative of allowing transactions to be reversable.