At the grocery store I only see "MSG Free" labels on soy sauce, ramen, noodles, etc. but nothing for chips, burritos, burgers, etc.
I know there are people who dislike MSG, but the MSG scare was also racist scaremongering, and I wonder how many people think they dislike MSG because the media said Chinese food will kill them while gulping down a big mac and bag of doritos every day
MSG is naturally found in kombu, which is used a lot in Japanese cooking. MSG was discovered by a Japanese biochemist working with kombu broth:
https://en.wikipedia.org/wiki/Monosodium_glutamate