bitcoin is a crypto currency. not physical.
while gold is a jewelry. physical form. although both can be used as an investment but both have different functions and uses and different fans
People who know bitcoin will definitely say that bitcoin will replace gold. and when the war was so easy to make as a milit asset.
I never know of any other crypto that is more amazing than BTC. Gold is something that we can touch or smell. A bitcoin is something like shares of some company or just a risky asset. Something digital can never replace something physical. Bitcoin can become a world currency? Yes, it is in his power, but he can never replace gold, gas, oil or simple sweets.