It was in the past, in less dynamic, less connected, less 'always on' economies. We've never seen what a deflationary currency will do in a modern, wired, 'speed-of-light/electricity' economy though.

It could lead to increased capital formation (savings) and less frivolous spending, eg spending only on necessities and appreciating assets, and less on throwaway, planned obsolete junk, while still maintaining enough velocity not to stall the economy. Leaner but still viable. Of course, getting from here to there will not be painless.

Who knows, jury's still out on it imho, will have to watch and see. Front-row seats to one of the greatest economic experiments of history, for better or worse.