College is a few years behind me, but not too far that I've forgotten my general experience.
As a graduate from a mid-tier university in the US:
-Nobody has ever given a shit about Intro to Econ. Practically every single Freshman is forced to take it so everyone bemoans the experience.
-Most schools allow you to take a Community College version of the course and transfer over credits saving you time and money (and effort depending on the school).
-In the "Hierarchy of Course Priorities", Intro to Econ is barely above Anthropology and soft sciences. I.e nobody gives a shit. Nobody has ever given a shit. And nobody wants to read through 20 pages of supply and demand and hear about a dude named Keynes because nobody thinks they're going to be an Economist or care or think its important. (Of course they're detrimentally wrong, but we're not here to criticize them, just see things from their perspective)
-Mid tier universities can have a mix of really good and really bad professors. So while he's pouring out his heart and soul, his faculty colleagues might be giving even less of a shit than his students. Degrading overall morale and willingness to learn. Especially when its entirely possible now to coast through a class online, do a few multiple choice exams, and move on with your life.
-Finally, Freshman classes as a whole filter out students who have poor studying discipline, so the likelihood of encountering failing students will be higher than average.