Let's say the Dollar and various fiats died next week, all the people unless they were holding assets like Gold or tangible assets and Bitcoin owners are safe and even prosper.
Don't you even bother to check history before spouting delusion?
Gold rarely holds its value when there is total collapse. Rather it is food that becomes valuable and the gold gets buried because it can't be spent. Rice was money for 600 years in Japan. Food was money during the Dark Age in Europe, not gold.
Gold only has value during brief periods of government failure, and where the gold can be moved into a new fiat asset that is functioning. If fiat fails totally, then gold also fails. Study history!