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 just like some sort of salt. It's sold as a "flavor enhancer". It's pretty inert stuff really. Except that it was revealed to me that MSG does very little if you put it in food that is already very savory, so you would typically use it to fix bland shit. I think people should be wary not of the side effects of MSG itself but that if MSG appears in a processed item with a bunch of other shit, then that means that a crapton of money went into making a bunch of cheaply-made fried tortilla chips with little to no nutritional value be as appealing to the human taste bud as humanly possible, and that's enough cause of concern to me, personally.