They can "keep the EBT cards working," but they can't make the electronic digits worth anything if the currency has collapsed. You are mistaking flashing digits for value. Flashing digits do not always have value. An EBT card that "works" but conveys only digits that have no value, is no better than an EBT card honestly flashing zeroes.
In the Carboniferous Epoch we were promised abundance for all,
By robbing selected Peter to pay for collective Paul;
But, though we had plenty of money, there was nothing our money could buy,
And the Gods of the Copybook Headings said: “If you don’t work you die.”