So one thing to keep in mind, the pressure to spend due to an inflationary monetary system influences people's behavior; perhaps the poor spend all their money

So one thing to keep in mind, the pressure to spend due to an inflationary monetary system influences people's behavior; perhaps the poor spend all their money because of inflation. When rent goes up every year and consumer prices increase, of course people who are just making ends meet never get to save. Perhaps in a disinflationary environment more poor people would save money and there would be more upward mobility. Of course, rich people would use hedges to make more money rather than just hedge against inflation, so that investment wouldn't go away. People that hoard currency lose out in all but a deflationary environment. Either way the idea that a class of people who take their dollars and put them in deflationary or disinflationary hedge investments lose while a class who keep cash in their mattress (if they're lucky enough to have savings after prices rise) win in an inflationary environment is missing a lot of economic behavior and dynamic and IMO is oversimplified and wrong.