The Resolv hack: How one compromised key printed $23M

https://www.chainalysis.com/blog/lessons-from-the-resolv-hack/

The Resolv Hack: How One Compromised Key Printed $23 Million

Web3 security lessons from the Resolv hack: how a compromised key enabled a $23M exploit, what went wrong, and how DeFi protocols can prevent similar attacks.

Chainalysis
If the admins can "lock all transactions", what's the point of it being a crypto?
Exactly. Stablecoins make zero sense.

Stablecoins enable cash-like (instantly redeemable and verifiable) payments for large amounts, for almost free.

In EU countries, you can't now buy a car with cash. You have to buy a bearer's check from your bank, which is expensive, requires that both parties have a brick and mortar bank, and doesn't work cross-border. Stablecoins solve this.

How do stablecoins fit in here? You can buy a car with crypto but not cash?