What? “Diverse information diets are not a good thing, because most people are not equipped to understand what is reasonable.” Do you realize how elitist and even authoritarian that statement is.
Being reasonable is time consuming, expensive, requires constant education and a mind open to accepting that being wrong is ok. It’s elitist almost by definition. I don’t see how you got authoritarian in the equation, though.
The response to this should be to ensure everyone does have the education and free time to be able to deal with this type of misinformation, but that runs contrary to the goals of those who benefit from the status quo.