While I don't know if this is the right path for the kid, or if he really is a genius (from the article he seems very smart) your comment comes across as mean spirited.
Do you not believe in the existence of genius, or that people vary in intelligence? If not, why do you doubt his intelligence? Terrence Tao is an example of a child prodigy who became a famous mathematician, although I would say winning gold in the International Mathematics Olympiad is a more objective standard than admission to Cornell.