You are absolutely right. We shouldn't tell anyone about our portfolio or any personal thing related to money! I learned it well, for one of my friend's mistake now I have a red tag! It's because I logged in on his smartphone and he did a huge mistake. So, any good friend can harm your money or hardware wallet, private keys badly! After finishing my studies, I will go for a job and crypto will be my part-time partner, and I will never share a single info about money or crypto with my friends!
maybe someone's level of privacy will be different in each person, there are those who have the very nature of privacy and there are open so depending on the people themselves. the best is maintaining privacy and the most important thing is that data storage must be very privacy
But just try to make sure if we are always using reliable service to keep us away from the scammers and phishing sites. So many scammers these days make us must take a high protection to our asset.