Social distancing or not ... the uncertainty in airfares is another reason travelers shouldn't let airlines off the hook. If I'm on a budget and found a $100 fare to see my aunt, there's nothing to guarantee I'll see that same fare ever again. Why should the traveler have to shell out additional money on top of the credit with no recourse to get what (s)he originally purchased? That's not right, either.
This is one of the best arguments I have seen.
Buy a fare today for $100. Gets cancelled. Rebook fare a month later, but now it will cost $200. Tough luck.
PUSH for a refund.