Why YSK: consuming too much sodium can lead to high blood pressure, increasing the risk of heart disease and stroke. In my country (USA), the average daily sodium intake is over 3,300mg, exceeding the recommended maximum of 2,300mg. The World Health Organization (WHO) recommends an even lower maximum of 2,000mg.
Also: with the rising cost of food, being mindful of additives that increase sell weight is important.
The RDA is a maximum, not the minimum needed. You will be perfectly healthy on 200-500mg a day. Eat whole grains, meat (or dairy), fruit, and vegetables and you’ll get more than enough
Only if you’re vegan will you likely have to give it some thought, and then it’ll be enough to eat processed meat substitutes or just add a pinch of salt when you’re cooking
even then you’d have to somehow avoid basically anything even remotely processed, and stuff like pickles and many many seasoning mixes… You’d really only ever get too little salt if you have some specific health condition where you need extra salt, and you’ll probably notice such because you’ll go “hm i want more salt”.