Keeping your finances secret is the best thing to do. The problem is, how do you do that? Whether it's cryptocurrencies or other assets, the car we drive, the clothes and accessories we wear, can attract the attention of anyone with bad intentions who is looking for someone to rob. Even if you don't disclose your crypto investments on social media, you need to be just as discreet in your daily life.
I think going to the extent of flaunting your resources on social media is what should be entirely discouraged. You can't just decide to be flaunting your wealth online when it does not help you in any ways. Keeping a low life will always be the good you can do for yourself especially when you live in a society where the average person is in poverty. If you want to flaunt your wealth in such environments, it is better to move to another environment where you have people of same status and still keep a low life on social media. Though I don't know the full story of hushpuppi but I know what made him more vulnerable to the security was also his flamboyant eyesore activities on the internet