The article doesn't imply that hard work trumps smartness at all, and it doesn't imply or state that there is little innate variation in ability. What it says i

The article doesn't imply that hard work trumps smartness at all, and it doesn't imply or state that there is little innate variation in ability. What it says is that if you tell a very smart or talented person how smart they are when they're younger, they're more likely to be afraid to take risks that would jeopardize that label. It's better to emphasize to them that they work hard, according to the author (and, I believe, studies that back him up).