Well, interest/demand for Bitcoin is surging among institutional investors and governments alike. Some governments (like the US government) are planning to sell their Gold reserves to buy more Bitcoin. El Salvador already made BTC a legal tender currency, while it continues to grow its stack of coins. Maybe Gold will be less-appealing to investors as a store of value in the future, as Bitcoin takes over the world by storm. If that happens, Gold will remain a "luxury item" used only for jewelry (a fashion statement).
Like you've said, the future can't be predicted. Who knows? Maybe Gold and Bitcoin will co-exist in the future. Just like how CBDCs will co-exist with crypto. It's a wild and crazy world, so anything's possible.

I think that is very interesting point. More and more big investors and governments are becoming interested in Bitcoin. El Salvador has already made Bitcoin an official currency and is still buying more and many governments also thinking to do this. This might make investors start to prefer Bitcoin over gold as safe place to put their money. As result gold might not be as popular anymore and only be used for making expensive jewelry. But like you said we can not know for sure what will happen in future. It is possible that gold and Bitcoin will both exist and be used at same time just like digital currencies from central banks and other cryptocurrencies. Future is always uncertain and anything can happen.