I'm not following this as closely as I probably should, but it seems to me to be more of a data collection and retention scheme than something that'd actually be useful to me and my neighbours in a crisis.

In part because cash is common in my part of Sweden, which is likely annoying to the bureaucrats and oligarchs. Cash is nice because a transaction does not involve a measure of creditworthiness while only leaving an indirect trail, and this 'offline' thingie they're going for probably does and besides keeping personal data available 'offline' for performing such stratifications of people it also (theoretically) allows for a phasing out of cash also in crisis and armed conflict.