One of the first articles I remember reading on HN was back in 2009. The gist of the article was that you shouldn’t praise your kids for being smart, praise them when they work hard. Rewarding hard work will better serve them in the long run since being smart will plateau at some point. I have a 9 and 11 year old and I still bristle a little bit when my mom says y’all are so smart.
Be careful relying on studies in this area. The "growth mindset", like much of psychology over the last several decades, is subject to the replication crisis. At the very least, the size of the effect is almost certainly quite small.
I only happened upon the growth mindset in the past year or so, and it's changed (or is changing) my life. I don't see how it's not possible that it's not profoundly true. That doesn't mean that you have to use one author's books or terminologies, but the point of it is a relatively profound truth. It resonates so strongly with me, and explains so many things about my anxieties and emotions, as it apparently does with others. And there's nobody pushing the opposite.