Crazy how most of the negative hype around that, total nonsense people have believed for decades now, started from some doctor making a joke paper in the New England Journal of Medicine because one of his other doctor friends was saying that orthopaedic surgeons were too stupid to get something published in there and bet like 10$ that to my recollection didn't even get paid (although this says 2024 I swear I remember reading about this 5-10 years ago):

But the story doesn’t end there. In 2024, a major twist emerged when a retired orthopedic surgeon and Colgate University trustee named Dr. Howard Steel contacted Colgate University professor Jennifer LeMesurier to make a shocking claim: He was the author of the letter. Goaded by a friend who had bet him $10 that he wasn’t smart enough to have an article published in The New England Journal of Medicine, Dr. Steel said he had invented the sensationalistic “strange syndrome” and the persona of Dr. Robert Ho Man Kwok to win the wager, LeMesurier recounted in a 2025 episode of This American Life. [1]

[1] https://www.self.com/story/what-is-msg-and-is-it-bad-for-you