So they sold their Gold to buy Bitcoin.
Bitcoin down 30 percent.
Selling off of gold on this forum occurred long before the crypto booms of the past six months. As long as 12 months ago there were posts commenting on how sales in the "good old days" would barely last 30 min, whereas now many required repeated drops in price and bumps to find a buyer.
Despite very little evidence to support your hypothesis, if we accept it as plausible then it really depends on what time frame you want to look at. Have a look at the chart attached below (yes it doesn't show the recent crash but no big deal), gold up 13% this year which is pretty phenomenal for it, BTC up 250%, and ETH up a lazy 2637%. Your quoted figure of a 30% decline in the value of BTC occurred over maybe a 2-3 hour period of turbulence on Friday that saw the value of 99.9% of cryptos plunge, rise and plunge again. Now they're rising and some of them (eg XVG) are up over 100% since their
all-time highs of less than a week ago, and this is during what many perceive to be a quiet period due to the approach of the festive season.
Source : coingecko
FWIW I haven't sold any gold for cryptos so there you go, your hypothesis has hit a snag with me. I did get rid of most of my septic silver holdings in my SMSF PMDS unallocated account and couldn't be happier. In the space of a fortnight looking at the proceeds on paper from the sale of that silver, I recouped all of my losses
over the past 6 years and have doubled my investment.
So your point about a 30% decline is ... pointless and smacks of schadenfreude.
This takes us back to an individual's rate of time preference. Individuals are selling gold (or any of the other PMs) now because they perceive the value gained by holding it for the
future is less than the value gained by selling it in the
present. In plain english that means gold has lost some of its lustre and people are selling it because they want their money now and they are looking for a better way to use it, that may well be cryptos, but it could also be a number of other asset classes or emergent spending needs.