I mean, Graeber and Marx aren't really taught in Econ degrees either. Nor is Adam Smith for that matter.

They're all basically dealing with the philosophy of economics, but economics has transitioned away from being a qualitative field to a quantitative one.

Now Econ majors are expected to read Baby Rudin by their first year in top undergrad programs.

Source: attempted to become an Econ major in first year. Realized I don't have it in me to do analysis, so became a CS and PoliSci double instead, still got the Econ minor though.

Also take a look at EJMR (Econ and Finance's version of HN) - https://www.econjobrumors.com/topic/why-baby-rudin-is