It seems difficult. The kind of person willing to study such a topic probably already has some skills. Most folks are non-criticial because they like to be that way, so you’re really asking for them to change their personalities.
That said, I liked the fanfiction novel Harry Potter and The Methods of Rationality (hpmor.com) despite its serious flaws. But, it is generally the target of intense hate in the regular HP fanfic community. It has its own fandom that is mostly separate.
I’ve been wanting to work through “Statistics” by Freedman, Pisani, and Purves, which talks a lot about confounders and other mistakes people can make. But, while not super technical, it’s a college level textbook.