Someone defrauded you, and you were able to recover the money.
With crypto, when you get defrauded, you will never see the money again. If you think there is no fraud in crypto, I have some things to sell you.
Your argument amounts to the same as relying on the police to return your car after it has been stolen and then declaring that as security.
Your argument amounts to claiming you have a car that is impossible to steal, and yet becomes permanently inoperable if you press the wrong button on the dashboard.
Being able to recover stolen property is a good thing, you know?