It is well to remember that humans and many, many other mammals thrive in widely varying environments, including the amount of salt in foodstuffs. So kidneys are adept at maintaining appropriate levels of sodium. There are limits, of course. You can't survive drinking sea water alone, because, while the kidneys may well be able to deal with the salt, they will need to do it by using more water (as urine) than the sea water provides. And early hunter gatherers likely spent at least some of the time short of salt and avidly sought sources. Meat alone doesn't provide enough salt. People can get into trouble on the so-called Paleo Diet from salt deprivation. (There's nothing about the diet that reflects "paleo" man's diet, anyway.)
The evidence suggests that the very small reduction in blood pressure in people with significantly reduced salt intake really reflects a salt intake so low that the body can't maintain the level of sodium it seeks. Unless you absolutely need to, it's not a good thing to deprive your body of a tital element to the point where it fails in some way, such as maintaining blood pressure. Your blood pressure may be high, but it's not caused by salt intake. If you reduce salt intake to zero, you will indeed reduce blood pressure. It will also be zero.
It's important to note that people with physical problems that either affect kidney function or that otherwise mandate an abnormally low sodium level may be forced to reduce salt intake dramatically. It's forcing the issue, not fixing the problem, but the problem may not be fixable, and the best we can do is force the sodium affect down.
And, as the SA article points out, when you are dealing with very large numbers, small changes may have effects that people imagine are large but are really miniscule. Lower blood pressures by 1 mm of mercury, and a few people live a bit longer. But...
The article cites the guesstimate that a 34% reduction in salt will "save 44,000 lives a year." What is that in individual terms? Well, that's 1/7114 of the US population. So we each get a theoretical 1/20 of a day or roughly one hour. That's assuming you don't die of something else in the meantime. And that's little more than a guess and may be entirely incorrect. (Probably no more correct than my back-of-the-envelope calculations, so don't bother pointing out the errors. You know what I mean by the effect being negligible.)
(I shall also continue to use MSG, for that is another entirely bogus evil.)