If you read it you'll see it contains some gems "This focus on middle and high school, and on adolescents is intentional: 12-18 year olds are at a developmental stage where they are just beginning to comprehend their social worlds and their roles and positions in these social worlds. We believe that learning CS in social terms at these ages can not only help them integrate perspectives on computing into their new awareness of the world, but that the ideas in CS itself can help them better understand what it means to be human, to make decisions, and to have intelligence. Children in primary school may be too young for conversations about systemic social conflict. And while adults in postsecondary and beyond need to learn justice-centered CS literacy as well, many are less open to such learning, having hardened their political views as they enter adulthood. We likely need different methods for children and adults."
They know adults will be skeptical of what they teach (with reason). So they try to jam it down children’s throats where there’s little parental oversight. Disagree with it? Enjoy failing the class and the hit it will have on your GPA for college. And they aren’t even trying to hide it.