Like everything else in academia, garbage language is a form of gate keeping. Why do art and literature majors have to take advanced math, like calculus or statistics? Because it screens out the weak, and passes the strong. Jump through the hoop, or drop out.
Garbage language among academics is the same as advanced math for art majors. You make it or you don’t, and if you don’t, we don’t want you anyway. Eh, that is to say, “Academic dialogue is intended for those faculty and administrators who are both highly educated and learnéd in the topic at hand, thereby contributing to the conversation in a meaningful way. There are of course options for those unable to contribute to the dialogue at hand.”