The problem is when people in power seizes people's banks account like it was done in Iceland because "the country needs sacrifices" and they themselves don't do the sacrifice.

Before banning possession of gold, FDR and all his friends and family actually sold their gold: https://en.wikipedia.org/wiki/Executive_Order_6102

When taxes were 95% in UK or US(during and after the big war) it was better for the big guys that paid very little at the end.

In times of emergency measures, just having info means you are not affected by that. But everybody else is.