Many people are still not aware of Bitcoin existence, thus banks are where they mainly save their money. But just like what happened to this woman, the risk of not able to withdraw your funds are always there because they're the ones who have full control of your money for being centralized. That's the risk that we have to take if we store our money to a centralized platforms. The point is, dont save all your money in banks, we cant be certain if our money is safe. Saving money through Bitcoin in a non-custodial wallet is much safer since you're the one who have full control over your funds.