Gold will be an option in maintaining value that does not have high fluctuations, bitcoin still has high fluctuations so that most governments and institutions make more purchases of gold than bitcoin even though today we see some countries making purchases of bitcoin but little of the portfolio they share to buy bitcoin.
Talking about bitcoin as a substitute for gold I think it will not happen it will only be an alternative even though many claim that bitcoin is digital gold, it is just a framing taken from some of the same properties of both in different places, diversifying both is one of the safest forms of investment we can take now.
It is quite normal, with how everything is going at the moment, people are looking into this like it is a way to save themselves. Look at the world, we are basically brink of another war, everyone is financially attacking each other and hate is growing faster than love.
So people who invest into gold, are doing it not because they love gold, but because they believe gold is the only way to store their value and that is why they are buying more. With the way markets are acting, thinking stocks would stay safe, or bonds would stay safe, is childish. So they buy gold (and we buy bitcoin) because they know that no matter what happens, there is a value for gold and if we buy more of it, then we could make more money with it.
And indeed if we look at stocks or bonds then if the fundamental structure is destroyed like a company or government is destroyed then it will be a bad thing in investment. that is not the best solution to handle prolonged finances, yes the ongoing conflict could become a military conflict and we know the consequences of a war where all assets could be destroyed which makes us lose what we have, even when our country is not at war, if investing in stocks in companies in countries that are in conflict and destroyed then our money will disappear, and we know that for thousands of years gold has always been an irreplaceable measure of value on this earth, while bitcoin which has just been born for a decade can create the same opportunity even though its adoption is still small compared to gold adopters.
because of that small adoption the fluctuation in bitcoin is very fast, people are not so sure about Bitcoin in the future than Gold because it has been tested for so long, so yes we should take a middle ground to save wealth is to diversify both and in which part is bigger it depends on each risk management.