I’ve known a few very intelligent maths professionals and although good people, they always struck me as a bit robotic. I know it’s anecdotal and a small sample size but I wouldn’t be surprised if a certain personality is needed to excel and it just happens to be very terse and overly professional. I however also think that that’s a big reason I never got into advanced mathematics in the first place. I can’t stand terse and overly professional material. I get bored much too easily.