This tweet of Roy Sebag explains a lot
This explains the latest focus of Goldmoney on holdings, extending the vault network and the trading tools, rather than gold transfers and the long time expected "Pay with Goldmoney" widget.
However, if the trust in fiat falls things will escalate quickly. There were times in history when fiat money lost its entire value in several months. People will drop fiat for whatever tangible asset they can afford. But people still need some medium of exchange. In past times, people replaced their own government fiat with another, more stable foreign fiat.
But now, if the entire global fiat system falls apart, people will use for exchange whatever asset is slightly fungible and divisible. Even gas will be a solution. Cryptos will certainly thrive. Gold may be unprepared at that time to compete with cryptos.
World governments may very well agree with a return to gold as world money, or adding gold to the SDR basket. But they will fall short to implement it. We know the state bureaucracy and international tensions, governments will need months if not years to agree on something and people won't wait.
If, as the government fiat falls, the private gold industry won't be prepared to offer solutions to easily exchange gold as money, cryptos will thrive and gold will remain again in the shadow.