This is a good reason to have more than one credit card from more than one bank.
This isn't just a credit issue though. It's people literally unable to access their own money, not money on credit. More so if people have the money in their checking/savings account to pay their bills why should they have to pay their bills on credit?!
The bank had better pay off any interest if their customers had to use a credit card to pay for anything during this time to get things back to Zero.