There's been 7(!) different state currencies within 100 years in Czech between the 1890s - 1990s.
Every single one of the monetary reforms stole money from the savers. The communist one was arguably the worst, but it's myopic to think it was the only bad one. And it's myopic to think that they steal your savings only during the volatile reforms. The steady times standardly come with a substantial dose of inflation.
Rašín's was pretty harsh, but at least he had really good reason and believed in sound money