Gold is also just digging something up and then re-burying it. If it hasnt replaced fiat then why are people buying it, why has it been going up 100% a year recently when theres no new industrial demand for it?
Its fine to not hold it, but all finite assets have some intrinsic value, because fiat keeps pumping via new debt issuance, which is inevitably debased. Like it was during Covid, or 2008, or 2001, etc..
Crypto has a higher volatility, but can have a higher return, and is more closer correlated to the Nasdaq; like all assets its generally efficiently priced. I'd say its closer to TQQQ than it is to VT or gold, which may be suitable for 1-10% of a portfolio depending on goals and risk tolerance. If they drop interest rates quickly to pump the stockmarket TQQQ and Bitcoin would likely both rise dramatically.