Yes it is true, one can be wealthy without attracting much public attention. So I believe the best way for one to be saved and secure is to live a very simple and private life. There are lots of people who has endangered there life just because they want people to notice that they are wealthy and also because they want others to look highly at them without knowing the risk or the implications. There are people that can't really do without social media, so whenever they acquired fame they will rush to social media to announce it without knowing the negative effects. It is not everything that one really needs to make public, keeping some information to ourselves will definitely save us from being attacked by criminal and other negative elements
Criminals are always looking for people who have money that can be looted in different ways. If you expose your real wealth online then you are volunteering yourself as a potential target for criminals. There is an incident in London where Belgian Barber was kidnapped after he posted online about a crypto fortune which he didn't actually have. Such fake news can also take you to trouble. Never post anything that tells how much money you have and take measures like hidding details of your crypto wallet.
https://decrypt.co/331264/london-kidnapping-barber-bitcoin-billionaire-he-wasnt