How many teachers are offloading their teaching duties onto LLMs? Are they reading essays and annotating them by hand? If everything is submitted electronically, why not just dump 30 or 50 papers into a LLM queue for analysis, suggested comments for improvement, etc. while the instructor gets back to the research they care about? Is this 'cheating' too?
Then there's the use of LLMs to generate problem sets, test those problem sets for accuracy, come up with interesting essay questions and so on.
I think the only real solution will be to go back to in-person instruction with handwritten problem-solving and essay-writing in class with no electronic devices allowed. This is much more demanding of both the teachers and the students, but if the goal is quality educational programs, then that's what it will take.