I am not going to be an astrophysicist or a premier footballer
I think that's true to a certain extent. But perhaps not to the extent we have always believed it to be true. In the sense that maybe we place too much emphasis on talent.
When the bulk of your top table tennis players at one point came from one street in Reading it does rather highlight that opportunity to practice, hard work and support to keep working hard does go a long way to shortening the odds.
Kids who don't demonstrate any obvious natural ability (that then attracts support, encouragement and opportunity) may be missing windows to become quite, or even really really good at something. Just because it was not presented as a realistic possibility for them.
I've just seen my own kid come from nowhere, to being picked for sign up in an adult semi pro team from September. He's not tall, he was a lousy shot, he wibbled in defence and that was a year after he started at 14. To the rest of the world he suddenly took off three months ago. I've been watching the leg work behind the "stratospheric rise" for 18 months. In the hot and the cold, with a clipboard and a burning desire to be back on the sofa with my iPad
The only thing that changed was that six months in he took "Hard work beats talent when talent doesn't work hard" to heart and has worked his socks off. On and off court. With physical skills work AND extensive reading.
I don't know if he'll realise his dream of making it to the very top. But I do know that having come to believe that the concept that talent is a nebulous, semi-myth ... he is applying the concept of "work hard, screw up, get up, work harder" to his life as well. Which has done wonders for his grades.
Maybe we need to focus less on the "premier"footballer part. Shift the focus away from the end goal at the top, and focus instead on the possibility that even without any obvious natural abilities most people, most of the time, can become at least competent in an area that will be useful/enjoyable for them, if they put in the hours needed.
I can't say I love having a kid whose sport participation means our life is ruled by his season. I would not have chosen this for him, or us. But credit where credit is due, it is via his sport that he has learned that if he applies himself he can make progress and a lack of obvious natural ability is no reason to not to work your socks off. Which is not a bad life lesson by any standards.
Plus he is far too busy to get into normal teenage trouble. Which is not to be sniffed at.
I don't think he would have made the mindset transition via posters in school and having to trot out 'sanctioned' ways of talking about his learning. That's too "chicken nugget" as opposed to hunting, butchering and cooking your own steak.
So as it is being presented I can't see it changing hearts and minds. Quite possibly it merely turns growth mindset into just one more hoop teachers and student have to jump through... when they'd rather be focusing on the stuff they enjoy/need and would like to get better/good at.