Where this ends is anybody's guess. But when the situation finally does resolve itself, it seems reasonable to expect economic and social dislocation both qualitatively and quantitatively beyond anything ever seen before.
The incremental manner in which the GFC continues to play out has numbed most people to the danger they are in.
Yes, negative nominal interest rates are fairly new.
But we had negative real interest rates on sovereign debt every now and then. Especially during the Great Inflation.
Honestly some commenters in the Netherlands were surprised over the past six months that people suddenly took action when their savings account went from 0% to -0.1% interest, but were entirely passive when their 0% interest account was exposed to 2% inflation for years, which has a much larger impact on purchasing power and was essentially subjecting people to negative annual returns on their purchasing power (i.e., the metric that matters).
My guess is that people expected bank accounts to work as something they have, that is secure and untouchable. It's not that it can't happen (a bank can go bankrupt and the CB refuses to cover the customers) but people who haven't gone through it, believe it can never happen. Their balance being reduced tipped them off that something is not quite alright.
What I'm trying to say is that people are more concerned about the bank dipping into their accounts (regardless of the amount) rather than them losing some Purchasing Power.