Bitcoin is certainly interesting in that it is a quantity limited asset - and some fraction of Bitcoin is lost or abandoned every year.
Each and every month you can count on every dollar you own to be diluted like clockwork.
One correction you can absolutely purchase physical precious metals though you will generally pay a premium above the spot melt price of the metal.
You can't purchase PMs at scale which I believe is what I said.
Gold can't be transported at scale either.
These logistics issues matter a great deal.
Digital paper gold is worth more than the real stuff because it exists online.
That's why gold mooned when its ETF launched.