Only because you said something. It wasn’t a mistake, it just some ambiguity implied source, enough for you to comment. I dunno man, I don’t know what to say. I will own up to a mistake but that I do not believe is qualified as such.
Take it easy man. Nobody really cares whether or not you made a mistake, an omission, whatever. Just don't be so quick to call other people dumb and you'll be good. Peace.