I use MSG and water in place of stock sometimes when for example, a recipe says to do a 2-3 hour braise of offal in stock (to take out the gross gamey odor in offal) and then to throw away the stock.
I would be wasting 2-3 liters of my hard to make stock if it weren't for MSG + water substitute.
I grew up with the media bias against MSG when I was a kid so as an adult it's like I still have this childhood belief that's difficult to change.
But based on new information about MSG, when I go to an Asian restaurant and if they use MSG, I would be okay with that and no longer feel like my life is at risk.
I learned that MSG is in our potato chips and many other foods we consume everyday. It could be the MSG in chips that make us have a craving for it (can't eat just one).
So...it could be that all Americans have been eating MSG on a regular and daily basis (if they eat potato chips etc.)