I think this should only apply to crypto hodlings. Generally, it is a very risky thing to flaunt your wealth. Not everyone is happy with you and some will be looking for ways to sell you out to people who could harm you and try to take your wealth.
What is the point showing his entire family his portfolio? Was he trying to convince them to invest, or just for show off. Whatever his reasons are, my take from his experience is that one should be careful who you show sensitive things about you to.
Indeed, we should be careful about whose and whom to tell our holding but much better to just tell no one aside from our husband/wife. In fact, we don't need to involve our life with others, and actually, no reason for them to know that we have XXX of Bitcoin because they really hate it. Sometime, they will tell us a scammer and some say that we are involved in illegal activities.
Yeah. It is safer to keep your financial investment to yourself and only reveal to your spouse. Not going around making a public announcement of what you have in your account. This could lead to you being exposed to those with criminal intent. It is better to live your life in private, except you are a celebrity or a political expose people.
Besides, it's a very bad and dangerous thing to be running our mouths like a fool, and if someone is naturally mature, they do not run their mouth anyhow, they will be calm, and listen more than they speak. These attributes should be inculcated in our wallet possessions as well, we should never dare reveal the worth of our wallets, it's better to pretend to have nothing at all or very little crypto assets if we can't deny it entirely. After all, the main reason why Satoshi invented Bitcoin was to keep the anonymity and privacy that the centralized system is depriving the masses.
When I mean spouse, I am actually referring to a wife/husband, not just a random girlfriend/ boyfriend.
Ii understand that there may still be partners who may not mean well.for their spouses, but that shouldn't discourage us from still trusting and revealing our secret to our wife/husband just in the case of eventualities.
That being said, know your partner before you reveal your secret to them, so they don't end up selling you out.