You tend to confuse price with adoption.
If you really think Bitcoin has surpassed gold in terms of adoption then you are very much mistaken. In India alone, for example, the majority of women own gold because it is their culture. They alone represent perhaps more than all the users of BTC.
A lot of people own gold but don't shout it out in the street because that's the kind of thing you don't tell anyone, even some friends.
In terms of adoption, Bitcoin is very far to eat gold.
In any case, the increase in value has little to do with it.
Gold and Bitcoin have differences such as volatility, and you don't invest in Bitcoin for the same reasons you invest in gold.
There are also many more risks with Bitcoin. An investor as a "good father" does not have much interest in investing a large percentage of his portfolio in Bitcoin.
Depending on your age you have different risk profiles that you can absorb
A young person might invest 30% in Bitcoin and 5% in gold, while an older person might invest 30% in gold and 5% in Bitcoin (or any other market considered risky).
Gold is not something easy to seize unlike what you say. It's a matter to choose wisely how to 'hodl' your gold. In the same way, you need to choose wisely how to 'hodl' your BTC (i.e. not using a 3rd party).
All the persons I know, including myself, have their gold with them at home or in a safe place. How could it be seized? The government or a governmental institution coming knocking at your home to say "Hey, you own some gold, we come to seize it" LOL, no way, it doesn't work like that