You can’t hide your limitations anyway. I know people who have a hard time thinking logically and critically. They often do and say things that strike me as rather thoughtless or impulsive. They often think and speak in clichés, relying more on emotion than facts, mostly opportunistically, and never in a complex way. I don’t think such people are capable of reflecting on their own limitations. And I suspect that my own limitations are just as transparent to a superior intellect. Assuming that the inductive step I'm using here is even valid.
That’s why I don’t get this perspective. It sounds as if using more foreign words or wearing a button-down shirt or something like that would somehow hide stupidity. But that’s not the case. To pick up on your quote again: For me, it’s more of a red flag when I notice that someone is making a special effort to come across as smarter than they actually are. To a certain extent, we’re all stupid. We should use the resources we have to get along together in life and in the world, instead of engaging in a dick-measuring contest.
Bullying, in the workplace and outside it, is a real-life example of the consequences of looking stupid if you don't have supportive people around you. Workplace bullying is a real phenomenon and surprisingly prevalent[0], even though it's never happened to me.
Do you agree that someone experiencing workplace bullying would be worried about looking stupid? And do you think that someone who wasn't directly affected by it might still change their behaviour to avoid it?
[0] See e.g. https://www.safeworkaustralia.gov.au/system/files/documents/...