That’s the difference, they hoard wealth and not currency. The value of assets do not go down when currency loses its value with inflation.
Wealthy have little to no cash that would lose value with inflation, they just buy everything on credit and have their wealth tied to assets and investments that probably gain value at least at the pace of inflation.
That is exactly what happened with third pound burgers.
https://www.snopes.com/news/2022/06/17/third-pound-burger-fractions/