Nothing is absolutely safe and gold has its risks. If you hold too much physical gold and if someone finds out, you not only run the risk of gold theft, but it can also put your life in danger. Or in cases like natural disasters and floods, moving gold will be very difficult. So your assets are not necessarily safe when set all in gold. The best way is to diversify, as many have mentioned, that way, you will be able to reduce the risk. Gold, savings, stocks, or some crypto, it's the best way.
The same can be said about bitcoin, if you have a lot of bitcoins and someone finds out about it, then the outcome can be the same. Money loves silence, so you should make sure that as few people as possible know about your funds. If we are talking about a very large amount, then it can be divided into different wallets and stored in different places. Diversification is also a good way to protect yourself from various undesirable situations, and when possible, we should use all available methods to reduce risks for our funds.