> What I have learned in this short period of time is that the pervasive narrative of “if you work hard you will get on” is a complete myth. It’s not true and we need stop saying it. This is because “working hard, and doing the right thing” barely gets you to the starting line

The author misses the point. It's true that only saying “if you work hard you will get on” is not enough. But it's only half the picture - working hard will only get you somewhere - the starting line. Then you need to continue and improve and adapt. Whether it's worth that time and effort is another question.

But simply accepting a half truth as a whole and ignoring the whole picture is harmful "It’s not true and we need stop saying it." is the completely wrong thing to say. Better: "it's not the only thing that counts, and we need to give tell our children what they really need to do"