This totally ignores the greediness in capitalism, which cryptocurrencies exemplifies (there's no problems they actually solve, except the problem of how to make the rich richer)
Socialist countries and dictatorships also agree with you that inflation is good. It's not a greedy capitalist thing, it's a 'greedy people in charge of the money' thing. Inflation is theft, and the rich protect themselves by buying stuff that basically tracks inflation. The poor get run over.