> from a practical perspective it is kinda true

Folks don't realize all the things they are hiding — and can be extraordinarily important to hide — even when they're actively hiding them! My personal favorite anecdote here is comes from a debate with a friend who was staunchly asserting that she had nothing to hide. I just blindly suggested — hypothetically — that one example would be if she were in early stages of pregnancy. Seven months later, guess what she was hiding during the argument.