People taking that stance are ignorant tribalists. Precious metals and crypto are complimentary. You may find yourself in a short term emergency or disaster situation without an internet connection or your hardware wallet, etc. In those cases, taking that 24k gold chain to the nearest gold buyer might save you. BTC is robust, but that doesn't mean you can't lose access to it for extended periods of time, such as while you are traveling. On top of that we have all of recorded history of gold being used as money, and crypto is still in its infancy.