The “human minimum requirement” of sodium may be 500mg per day, but that doesn’t mean the human will be comfortable or functioning optimally. “Human minimum requirement” in this case means something like “minimum daily sodium a human can consume over the long term and maintain a beating heart.”
I learned in a college nutrition course that one teaspoon of fat per day is the minimum amount of fat required by the human body for survival. I don’t think anyone who limits themselves to a teaspoon of fat per day is going to be comfortable or functioning optimally
50mg per day of vitamin C is enough to prevent scurvy, but most people will want to get more (and most people do get more) for optimum skin condition and healing.
Maybe it’s a problem with semantics. It’s natural to suppose that “minimum requirement” means “minimum to be healthy” but it generally means “minimum without breakdown.”
Maybe “optimal minimum daily” or something would be a more clear term.