A business that was going to fail due to low margins without COVID19 shouldn't suddenly get to live because COVID19 destroyed the world economy.
It has to be a pause in collection (and interest), but at the end of the day the lender also has to get their money back.
But if it’s just a pause in collection, and you still owe that money, then it’s the same old margin problem: very few restaurants make enough money to repay that loan no matter who it comes from.