This shows that even physical investments can be just as risky if not more depending on the circumstances.
Anything that has a potential to gain profit has its risk. That's why everything that physical and digital investments have their respective risk. You have to deal it on your own when it's very risky at all and that's the reason if you like digital assets, you need to take the risk and if not, you've got to learn how to accept and study it. But, if you don't like risk, you're good to save money without having any taking risk but it will just be consumed by the inflation and so, little risk is still risk if it's within the crypto market or even the others.