Anyone who says their smart overestimates themselves. Anyone who says their dumb underestimates themselves. How does anyone even answer this question?

I think it’s possible for someone to know that they are generally pretty smart or not very smart without over or under estimating. A lot of people will over or under estimate but if you’re just looking for a rough placement in a third of the bell curve, there’s a lot of feedback in everyday life to help.

Pedants who choose to make big deals over minor issues are always out to prove something and are objectively not smart.

Some people sincerely have trouble adapting to different precisions of language in different situations. I know some very smart and successful people with autism who struggle with this. It can be super annoying when they are way too pedantic for the context but I don’t think being deficient in this one area makes them dumb.