For context, my wife is always criticizing how I don't add enough salt to the dishes I cook. I also have no tats. She does.
But at least you can always add more salt lol
You need to add salt as you cook. Yes, you can add it afterwards, but you don't get the same flavor layering, food texture, salt penetration, and for some foods, the necessary chemical reactions in your dishes. In some sense, I feel confident that your wife is right based purely on the fact that you think you can just add salt after it's cooked and get the same thing.
Source: have tattoos and cook food. ๐