High end grocery stores deliver the comestibles to domestic staff, who have called the order in, in advance. The bills are paid monthly.
In this scenario, the grocery stores could easily grant a month's leeway.
But for people who spend their time in the checkout lines, I don't see any easy way for the grocers to accommodate this short-term "crisis."
OTOH, workers in the Real World who earn salaries on the order of magnitude of Federal GS employees, have either savings or other debt resources that can cover this inconvenience. Don't forget, the average wage for a Fed is nearing six digits, and like all Americans, the vast majority of Fed households have two (2) incomes.
While there is no doubt that some of them are put at hardship by this, they are in a small minority, and the Media seeks out for coverage those who are most dramatically affected, in their continuing campaign to reverse the results of the 2016 election.