Which is a pretentious way of saying that a lot of the profs are so far removed from practice that they don't actually know how to file motions.
Anyone can figure out how to file a motion (which thread are we in, after all?). Being able to know WHEN (substantively, judiciously, and procedurally, not merely technically) and WHAT to file (or not file) is the greater skill/ art. I mean, sure, those comments are pretentious in the way presented - which is why it's funny, but it isn't wrong (and that's the whole tension of the book/ movie/ show).
Why should professors need to litigate day-to-day? They're academics (for the most part), and don't need to know minutiae of local rules - they, like they expect of their students, could figure those out if need be. Their job and proficiencies are elsewhere. And given there are always local rules, useless to teach hyper-specifics in a (national) law school.
Plus, gazillions of (practicing) lawyers don't know more than the basics of litigation, and don't need to.
This litigation, however, shows a nice intersection of substantive, procedural, judgmental, and administrative skill on Hardin's part. Someone in his situation could have learned (like Russ...or not...) the technical rules, but if he didn't know how to interpret and wield the substantive law or the larger rules of procedure, plus have some judgment honed by experience, knowing the technicalities of how to file something wouldn't mean much*.
* unless, apparently, you're a supposed IFP
pro se plaintiff (though R doesn't even get the technicalities, so not a perfect example, I get it).