Locus of control

Learning to fail is probably one of the most important skills to have.

"And they also discover what it's like to fail. While on the surface might not sound all that appealing, failure is how kids learn how to overcome obstacles, try out new ideas, and become resilient."

Having an internal locus of control allows you to take responsibility, and learn from your actions. This trend would actually explain why it seems so many people feel powerless and are always blaming other groups for their ills. I can see this as a big contributor to identity politics, as feeling powerless may force people to seek out groups to identify with that provide them some feeling of safety and belonging.

"not having control of their decisions and life creates an external rather than internal locus of control. Internal locus of control is "the degree to which you feel that you're in control of your own life, versus the degree you feel you're a victim of fate and circumstance and powerful other people," he says. "Every decade, young people report less internal locus of control, more external locus of control.""

https://www.npr.org/sections/health-shots/2018/09/03/641256596/to-raise-confident-independent-kids-some-parents-are-trying-to-let-grow