Like the flight where the 'Karen' notified the stewardess that a passenger was writing notes in a foreign language and was concerned he was a possible threat. Turned out he was doing math equations

Are you referring to the dihydrogen monoxide scares of the ‘00s?

Yeah, our stupid people really broke the mold over here. They are painfully dumb, and trying to reason with them will actually damage your health.

I remember the same. It was on a big name TV station, too.