I work at a K-12. Digital citizenship and online critical thinking is 100% a part of the curriculum at every grade level. I've gone into classrooms at elementaries, middle schools, and high schools and seen materials explaining how to evaluate the credibility of information online.

Unfortunately, approximately 85% of the voting population will never benefit from these classes, because the idea of them being necessary or useful had not occurred to anyone when they were in school. It's the same reason nobody over 50 learned how to use a computer in grade school. They did not exist.

This is a problem that will become vastly less serious three generations from now.