Isn't that easy to understand the meaning of the whole word if you just try to understand the parts? If someone is not educated, you just explain the meaning of "meta" and "cognition" and after that they can just infer the meaning by themselves. These are relatively popular words.
IDK. Given the intended audience, as well as the general process / mindset he's championing I don't ssee how meta-cognition is a tough word. I mean, if you don't know it doesn't that literally force you to reconsider your thinking.
Meta-cognition - given the source, the target audience, the subject matter and the context is hardly a fancy word.