Adding salt at the table does not always do the trick. Perfect example: pasta or rice. Cook it without salt and it can never recover.
I’ve found more and more restaurant food comes to the table with not enough salt. Then you have to ASK for the salt shaker—they don’t automatically provide it any more.
Anyone ever notice that we have a built-in salt monitor? When something tastes too salty to you it is sometimes because you have enough salt in your body at the time. Sugar works the same way. So does food in general!
In 60 years, I don't think my (Thai) wife has ever salted rice. However, most anything that is eaten with rice is very salty. I'm always telling her to ease up on the salt. I guess it's habit from eating only a little stuff on top of a huge portion of rice.