I openly display my intelligent all the time. Nobody would -describe- it as that, however. They'd describe me as giving advice, suggesting solutions, or similar -specific- activities, and only in appropriate situations. (If you don't know when advice is desired - which is, critically, not whenever somebody mentions a problem they have - don't give it unless asked.)

"Openly displaying your intelligence", as an activity in itself, is merely -bragging-, and is just as annoying, and for precisely the same reason, as the guy who will tell anyone who will listen about how he's a motorcycle racer who could easily win any race he ever entered, but he just enjoys riding his motorcycle for the fun of it.