Sugar yes, salt no, unless you are genetically dispositioned to not handle salt correctly, which is a very small subset of the population. Not getting enough salt is really bad for your body. I suggest reading "The Salt Fix".
The common belief that we need to eat low salt diets came from junk science in the 50s and 60s. The "science" was more about one guy's feelings and beliefs than it was peer reviewed science.
I'm certainly not advocating what anyone should consume, just what I believe to be true personally. If you feel better on boatloads of sodium fill your boots, it's your body. I just see a lot of fluff from Biohackers and influencers reframing salt as a "performance enhancer", pushing ideas like;
-You're chronically dehydrated
-Salt boosts energy and focus
-Low salt causes adrenal fatigue
-Salt pre-workout gives a pump
These claims spread fast because they're simple, feel intuitive, and give people an immediate sensation (salt does increase thirst and blood volume acutely). None of this is supported by the major health bodies, in fact global health research consistently shows high sodium intake increases cardiovascular risks. This creates a cultural swing where salt becomes the new "forbidden thing that's actually good for you" but unlike fat - where the science has evolved - the evidence on high sodium and cardiovascular disease has stayed extremely consistent for decades.
Electrolyte companies market aggressively on these new claims pushing electrolyte powders, hydration multipliers, functional salts, you name it, saying most people are salt deficient and they need more to function optimally. This again is still directly contradicted by the WHO and global epidemiology which clearly shows most people already consume far above the recommended levels. I can see a time and place for added electrolytes if you're an endurance athlete or on a low-carb or keto diet which are known for increased sodium loss.
Today high sodium intake is still strongly linked to hypertension, heart disease, and stroke. Most countries consume well above recommended levels contributing to atherosclerosis progression along with the customary blood pressure issues. Reducing salt intake is still one of the most effective public health interventions for preventing cardiovascular disease.
I for one feel like garbage if I overuse salt, I get super bloated and hold a ton of water and resemble a human pufferfish. This alone keeps me from reaching for it, who enjoys feeling like trash? It's also something I can live without so reducing the associated risks is a no-brainer for me. A lot of foods have naturally occurring salts in them and I see no harm with a pinch on certain meals but some people out there treating it like a must have supplement is asinine. You really have to make an effort to be low in sodium, it's not a common condition for most people.
If high salt works for you, stay the course. It doesn't work for me...