The goal of that campaign was not to change which denominations are in circulation, but rather quite explicitly to confiscate unaccounted-for wealth stored as p

The goal of that campaign was not to change which denominations are in circulation, but rather quite explicitly to confiscate unaccounted-for wealth stored as piles of cash - that's why there were all kinds of quantity limits, and also the time limit to ensure that those who had a lot of such cash could not effectively launder most of it.