While fiat monetary systems are inherently flawed, I'd say that Gold and Silver also have a critical weakness.

They are ring-fenced by the governments that control their distribution and trading. It is a hard pill to swallow, but if precious metals were truly able to threaten government sovereignty, they wouldn't allow them to be bought and traded.

I know it isn't popular to think this way, and that it may just sound like a complete outlier theory -- but recall whenever precious metals are deemed a threat, the confiscations begin.

Its a dangling carrot that is used to keep elements of the population pacified, while its utility is constantly being eroded.