Gold in general is no better. The value of gold is nothing more than a result of a global consensus - at the moment everyone agrees to consider gold a measure of value, simply because this measure is in some form or another necessary. If we assume a utopian situation, that tomorrow everyone agrees that gold is not such a measure, then it will be good only for the production of quality wires and trinkets.
The btc is gaining momentum for exactly the same reason - the global consensus towards the btc is constantly being strengthened. In this case, unlike gold, the cue-ball is not only a measure of value, but also a settlement system, and gold is not a competitor for this parameter.
Your argument is good, I think if bitcoin replaces gold is good, all countries will use bitcoin to measure the value of the world, But now some countries do not accept bitcoin, and one The number of people is unknown to bitcoin. To know human bitcoin requires knowing about computers, smart phones. But this is limited to many people. So bitcoin will be hard to replace in the future.