The problem isn't that econ PhDs don't have classes giving more nuanced views of the world, but the fact that people spend so much time with “introductory economics” that even Nobel prices will make nonsensical arguments based on those flawed concepts.

It seems that spending several years working with models assuming that the earth is flat isn't being well compensated by one class on “imperfect flatness”.

(I've contemplated doing an econ PhD myself before changing course, and I've been exposed to much more than econ 101).