It is not right to think of Bitcoin as digital gold, as this is premised upon the idea that the 21 million is the endgame or the genius behind Bitcoin.
Most support for BTC is reflectant of and motivated by a belief built upon the idea of accumulating a scarce asset, which I don’t necessarily fault as folly. However, I believe it is the technological and economic breakthroughs behind the genesis of Bitcoin that matter more than the scarcity as such. When you accumulate the ‘digital gold’ today, what are you saying to the world of the 2100’s or that of the 2200’s? What are you leaving them?