MSG isn't "some other crap", just like table salt isn't some other crap. They're base ingredients, not seasoning mixes like chicken salt. In fact, monosodium glutamate and sodium chloride are already naturally found in plenty of grown foods.
Here's the wiki page that lists some similar seasoned salts overseas: https://en.wikipedia.org/wiki/Seasoned_salt And like Naeva said, some (apparently even the original chicken salt recipe) already contain MSG.